unless specified otherwise , all wt % values quoted hereinafter are percentages by weight based on total weight of the hair treatment composition . by “ insoluble ” is meant that the material is not soluble in water ( distilled or equivalent ) at a concentration of 0 . 1 %, at 25 ° c . this present invention relates to the use of silicone psas for hair care applications . the term “ silicone pressure sensitive adhesive ” ( spsa ) refers to pressure sensitive adhesives comprising a silicone resin and a polydiorganosiloxane . these “ pressure sensitive adhesive ” ( psa ) materials are permanently tacky at room temperature and able to develop measurable adhesion to a surface simply upon contact or by the application of a light pressure . generally they do not require heat . no chemical reaction takes place between the adhesive and the adherent , no curing of the adhesive is necessary and no solvent is required to be lost during the adhesion process . in the context of the present invention there are 3 types of silicone psas : i ) one class of silicone pressure sensitive adhesives consists of a mixture of ( i ) a silanol end - blocked polydiorganosiloxane fluid , e . g . a polydimethylsiloxane polymer and ( ii ) a trimethylsilyl end - blocked polysilicate resin such as a silicate resin consisting of a benzene - soluble resinous copolymer containing silicon - bonded hydroxyl radicals and consisting essentially of triorganosiloxy units of the formula r □ sio1 / 2 and tetrafunctionalsiloxy units of the formula sio4 / 2 in a ratio of about 0 . 6 to 0 . 9 triorganosiloxy units for each tetrafunctionalsiloxy unit present in the copolymer , wherein each r is a monovalent organic radical independently selected from the group consisting of hydrocarbon radicals of from 1 to 6 inclusive carbon atoms . u . s . pat . no . 2 , 736 , 721 to dexter et al . and u . s . pat . no . 2 , 814 , 601 to currie et al . teach such or similar silicone pressure sensitive adhesives . ii ) a preferred class of silicone psas are prepared by condensing the silicone fluid and the silicate . in this preferred condensation reaction , the silicate resin and the silicone fluid are mixed together in the presence of a catalytic amount of a silanol condensation catalyst and then the silicate resin and the silicone fluid are condensed , for example , by heating under reflux conditions for 1 to 20 hours . examples of silanol condensation catalysts are primary , secondary and tertiary amines , carboxylic acids of these amines and quaternary ammonium salts . iii ) a further optional step can also employ an alkenyl - functional polymer and a crosslinking agent containing silicone - bonded hydrogen atoms , they are cured by a hydrosilation addition reaction using a platinum - type catalyst as described in u . s . pat . no . 4 , 988 , 779 . in such systems the molar ratio of silicon bonded hydrogen groups to silicone bonded alkenyl groups is typically greater than 1 . however these systems are not highly preferred . a preferred silicone psa comprises ( a ) 40 to 70 parts by weight of at least one silicone copolymer resin and ( b ) 30 to 60 parts by weight of at least one polydiorganosiloxane . the silanol content of the silicone pressure sensitive adhesive composition is reduced by chemically treating at least a portion of ( a ), ( b ) or the mixture of ( a ) and ( b ) with at least one chemical treating agent ( c ) that reacts with silicon - bonded hydroxyl groups to reduce the silicon - bonded hydroxyl content of the composition . preferably the silicon - bonded hydroxyl content of the composition is reduced to a range of between 8000 and 13 , 000 . the silicone resin copolymers ( i ) usually contain silicon - bonded hydroxyl radicals in amounts which typically range from about 1 to 4 weight percent of silicon - bonded hydroxyl radicals and comprise triorganosiloxy units of the formula r 3 sio 1 / 2 and tetrafunctional siloxy units of the formula sio 4 / 2 in a mole ratio of from 0 . 6 to 0 . 9 r 3 si 1 / 2 units for each sio 4 / 2 unit present . blends of two or more such copolymers may also be used . there should be at least some and preferably at least 0 . 5 % silicon - bonded hydroxyl content to enable the polydiorganosiloxane component to copolymerize with the copolymer resin and / or to react with the end blocking agent being added to chemically treat the silicone pressure - sensitive adhesive composition . each r denotes , independently , a monovalent hydrocarbon radical having from 1 to 6 inclusive carbon atoms such as methyl , ethyl , propyl , isopropyl , hexyl , cyclohexyl , vinyl , allyl , propenyl and phenyl . preferably , the r 3 sio 1 / 2 units are me 3 sio 1 / 2 units and / or me 2 r 1 sio 1 / 2 units wherein is r 1 is a vinyl (“ vi ”) or phenyl (“ ph ”) radical . more preferably , no more than 10 mole percent of the r 3 sio 1 / 2 units present in resin copolymer ( i ) are me 2 r 2 sio 1 / 2 units and the remaining units are me 3 sio 1 / 2 units where each r 2 is a vinyl radical . most preferably , the r 3 sio 1 / 2 units are me 3 sio 1 / 2 units . the preferred class of silicone psas ( ii ) usually comprise one or more polydiorganosiloxanes comprising arsio units terminated with endblocking trasio 1 / 2 units , where each r is as defined in the paragraph above . each a radical is selected from radicals such as r or halohydro - carbon radicals of from 1 to 6 inclusive carbon atoms such a chloromethyl , chloropropyl , 1 - chloro - 2 - methylpropyl , 3 , 3 , 3 - trifluoropropyl and f 3 c ( ch 2 ) 5 radicals . thus the polydiorganosiloxane can contain me 2 sio units , phmesio units , mevisio units , ph 2 sio units , methylethylsiloxy units , 3 , 3 , 3 - trifluoropropyl units and 1 - chloro , 2 - methylpropyl units and the like . preferably , the arsio units are selected from the group consisting of r 2 sio rr ′ sio units , ph 2 sio units and combinations of both where r and r ′ are as for r in the paragraph above , at least 50 mole percent of the r ′ radicals present in the polydiorganosiloxane ( ii ) are methyl radicals and no more than 50 mole percent of the total moles of arsio units present in each polydiorganosiloxane of ( ii ) are ph 2 sio units . more preferably , no more than 10 mole percent of the arsio units present in each polydiorganosiloxane ( ii ) are mersio units where r is as above defined and the remaining arsio units present in each polydiorganosiloxane are me 2 sio units . most preferably , substantially all of the arsio units are me 2 sio units . each t radical is r , oh , h or or ′ radicals where each r ′ is an alkyl radical of from 1 to 4 inclusive carbon atoms such as methyl , ethyl , n - propyl , and isobutyl radicals . h , oh and or ′ provide a site for reaction with the endblocking triorganosilyl units of ingredient ( iii ) and also provide a site for condensation with other such radicals on polydiorganosiloxanes ( ii ) or with the silicon - bonded hydroxyl groups present in resin copolymer ( i ). use of polydiorganosiloxanes where t is oh is most preferred because the polydiorganosiloxane ( ii ) can then readily copolymerize with the resin copolymer ( i ). when an appropriate catalyst such as hcl , which is generated when chlorosilanes are used , or ammonia , which is generated when organosilazanes are used , as endblocking agents , then triorganosiloxy ( e . g ., r 3 sio 1 / 2 such as ( ch 3 ) 3 sio 1 / 2 or ch 2 ch ( ch 3 ) 2 sio 1 / 2 ) unit terminated polydiorganosiloxanes can be employed because some of the triorganosiloxy units can be cleaved when the condensation reaction is conducted with heating . the cleavage exposes a silicon - bonded hydroxyl radical which can then condense with silicon - bonded hydroxyl radicals in the copolymer resin , with endblocking triorganosilyl units or with other polydiorganosiloxanes containing h , oh or or ′ radicals or silicon - bonded hydroxyl radicals exposed by cleavage reactions . mixtures of polydiorganosiloxanes containing different substituent radicals may also be used . each of the polydiorganosiloxanes ( ii ) preferably have a viscosity of from 100 centipoise to 30 , 000 , 000 centipoise at 25 ° c . ( 100 millipascal - seconds to 30 , 000 pascal seconds ( pa · s ) where 1 centipoise equals 1 millipascal second ). as is well - known , viscosity is directly related to the average number of diorganosiloxane units present for a series of polydiorganosiloxanes of varying molecular weights which have the same endblocking units . polydiorganosiloxanes having a viscosity of from about 100 to 100 , 000 centipoise at 25 ° c . range from fluids to somewhat viscous polymers . these polydiorganosiloxanes are preferably pre - reacted with resin copolymer ( i ) prior to condensation in the presence of endblocking agent ( iii ) to improve the tack and adhesion properties of the resulting psa as will be further described . polydiorganosiloxanes having viscosities in excess of 100 , 000 centipoise can typically be subjected to the condensation / endblocking step ( ii ) of the present invention without pre - reaction . polydiorganosiloxanes having viscosities in excess of 1 , 000 , 000 centipoise are highly viscous products often referred to as gums and the viscosity is often expressed in terms of a williams plasticity value ( polydimethylsiloxane gums of about 10 , 000 , 000 centipoise viscosity typically have a williams plasticity value of about 50 mils ( 1 . 27 mm ) or more at 25 ° c .). examples of endblocking agents ( iii ) are ( me3si ) 2nh , ( vime2si ) 2nh , ( mephvisi ) 2nh , ( cf3ch2ch2me2si ) 2nh , ( me3si ) 2nme , ( clch2me2si ) 2nh , me3siome , me3sioc2h5 , ph3sioc2h5 , ( c2h5 ) 3sioc2h5 , me2phsioc2h5 , ( i - c3h7 ) 3sioh , me3si ( oc3h7 ), mephvisiome , me3sicl , me2visicl , mephvisicl , ( h2cchch2 ) me2sicl , ( n - c3h7 ) 3sicl , ( f3ccf2cf2ch2ch2 ) 3sicl , ncch2ch2me2sicl , ( n - c6h13 ) 3sicl , meph2sicl , me3sibr , ( t - c4h9 ) me2sicl , cf3ch2ch2me2sicl , ( me3si ) 20 , ( me2phsi ) 20 , brch2me2siosime3 , ( p - fc6h4me2si ) 20 , ( ch3cooch2me2si ) 20 , [( h2ccch3cooch2ch2 ) me2si ] 20 , [( ch3cooch2ch2ch2 ) me2si ] 20 , [( c2h5oocch2ch2 ) me2si ] 20 , [( h2cchcooch2 ) me2si ] 20 , ( me3si ) 2s , ( me3si ) 3n , me3sinhconhsime3 , f3ch2ch2me2sinmecoch3 , ( me3si )( c4h9 ) ncon ( c2h5 ) 2 , ( me3si ) phnconhph , me3sinhme , me3sin ( c2h5 ) 2 , ph3sinh2 , me3sinhocch3 , me3sioocch3 , [( ch3conhch2ch2ch2 ) me2si ] 20 , me3sio ( ch2 ) 40sime3 , me3sinhocch3 , me3sicch , ho ( ch2 ) 4me2si ) 20 , ( hoch2ch2och2me2si ) 20 , h2n ( ch2 ) 3me2sioch3 , ch3ch ( ch2nh2 ) ch2me2sioch3 , c2h5nhch2ch2s ( ch2 ) gme2sioc2h5 , hsch2ch2nh ( ch2 ) 4 me2sioc2h5 , hoch2ch2sch2me2sioch3 . preferably , the endblocking agent employed is ( me3si ) 2nh . a preferred silicone psa emulsion can be prepared by mixing the silicone psa in suitable solvents to give a dispersed phase . it is advantageous if this dispersed phase comprises 20 to 80 % by weight of the silicone pressure sensitive adhesive . preferably at least one solvent will be a volatile solvent , meaning a solvent with a boiling point below 300 ° c . one or more of the solvents is preferably a silicone . the psa / solvent mixture is optionally emulsified in water using one or more surfactants . the preferred surfactants are anionic or nonionic surfactants , especially a blend of anionic and nonionic surfactants . the silicone solvent can be a linear polydiorganosiloxane such as hexamethyldisiloxane , octamethyltrisiloxane , decamethyltetrasiloxane , dodecamethylpentasiloxane or a polydimethylsiloxane of viscosity 1 cst , or can be a cyclic siloxane such as decamethylcyclopentasiloxane or octamethylcyclotetrasiloxane or can be a mixture of one or more linear polydimethylsiloxanes with one or more cyclic siloxanes . other solvents include ethyl acetate and hydrocarbons ( e . g heptane , hexane , isododecane ). the compositions of the invention may further comprise from 0 . 001 % to 10 % by weight of a hair styling polymer . more preferred amounts of hair styling polymer in the compositions of the invention are from 0 . 1 % to 5 % by weight of the composition , even more preferably from 0 . 5 % to 3 % by weight . however it is highly preferable if additional hair styling polymersthey are not present or present in levels below 0 . 01 wt % of the total composition . hair styling polymers are well known . suitable hair styling polymers include commercially available polymers that contain moieties that render the polymers cationic , anionic , amphoteric or nonionic in nature . suitable hair styling polymers include , for example , block and graft copolymers . the polymers may be synthetic or naturally derived . copolymers of vinyl acetate and crotonic acid ; terpolymers of vinyl acetate , crotonic acid and a vinyl ester of an alpha - branched saturated aliphatic monocarboxylic acid such as vinyl neodecanoate ; copolymers of methyl vinyl ether and maleic anhydride ( molar ratio about 1 : 1 ) wherein such copolymers are 50 % esterified with a saturated alcohol containing from 1 to 4 carbon atoms such as ethanol or butanol ; acrylic copolymers containing acrylic acid or methacrylic acid as the anionic radical - containing moiety with other monomers such as : esters of acrylic or methacrylic acid with one or more saturated alcohols having from 1 to 22 carbon atoms ( such as methyl methacrylate , ethyl acrylate , ethyl methacrylate , n - butyl acrylate , t - butyl acrylate , t - butyl methacrylate , n - butyl methacrylate , n - hexyl acrylate , n - octyl acrylate , lauryl methacrylate and behenyl acrylate ); glycols having from 1 to 6 carbon atoms ( such as hydroxypropyl methacrylate and hydroxyethyl acrylate ); styrene ; vinyl caprolactam ; vinyl acetate ; acrylamide ; alkyl acrylamides and methacrylamides having 1 to 8 carbon atoms in the alkyl group ( such as methacrylamide , t - butyl acrylamide and n - octyl acrylamide ); and other compatible unsaturated monomers . the additional styling polymer may also contain grafted silicone , such as polydimethylsiloxane . resyn ® 28 - 2930 available from national starch ( vinyl acetate / crotonic acid / vinyl neodecanoate copolymer ); ultrahold ® 8 available from basf ( ctfa designation acrylates / acrylamide copolymer ); the gantrez ® es series available from isp corporation esterified copolymers of methyl vinyl ether and maleic anhydride ); luviset pur ® available from basf . other suitable anionic hair styling polymers include carboxylated polyurethanes . carboxylated polyurethane resins are linear , hydroxyl - terminated copolymers having pendant carboxyl groups . they may be ethoxylated and / or propoxylated at least at one terminal end . the carboxyl group can be a carboxylic acid group or an ester group , wherein the alkyl moiety of the ester group contains one to three carbon atoms . the carboxylated polyurethane resin can also be a copolymer of polyvinylpyrrolidone and a polyurethane , having a ctfa designation pvp / polycarbamyl polyglycol ester . suitable carboxylated polyurethane resins are disclosed in ep - a - 0619111 and u . s . pat . no . 5 , 000 , 955 . other suitable hydrophilic polyurethanes are disclosed in u . s . pat . nos . 3 , 822 , 238 ; 4 , 156 , 066 ; 4 , 156 , 067 ; 4 , 255 , 550 ; and 4 , 743 , 673 . amphoteric hair styling polymers which can contain cationic groups derived from monomers such as t - butyl aminoethyl methacrylate as well as carboxyl groups derived from monomers such as acrylic acid or methacrylic acid can also be used in the present invention . one specific example of an amphoteric hair styling polymer is amphomer ® ( octylacrylamide / acrylates / butylaminoethyl methacrylate copolymer ) sold by the national starch and chemical corporation . examples of nonionic hair styling polymers are homopolymers of n - vinylpyrrolidone and copolymers of n - vinylpyrrolidone with compatible nonionic monomers such as vinyl acetate . nonionic polymers containing n - vinylpyrrolidone in various weight average molecular weights are available commercially from isp corporation — specific examples of such materials are homopolymers of n - vinylpyrrolidone having an average molecular weight of about 630 , 000 sold under the name pvp k - 90 and are homopolymers of n - vinylpyrrolidone having an average molecular weight of about 1 , 000 , 000 sold under the name of pvp k - 120 . other suitable nonionic hair styling polymers are cross - linked silicone resins or gums . specific examples include rigid silicone polymers such as those described in ep - a - 0240350 and cross - linked silicone gums such as those described in wo 96 / 31188 . examples of cationic hair styling polymers are copolymers of amino - functional acrylate monomers such as lower alkyl aminoalkyl acrylate , or methacrylate monomers such as dimethylaminoethyl methacrylate , with compatible monomers such as n - vinylpyrrolidone , vinyl caprolactam , alkyl methacrylates ( such as methyl methacrylate and ethyl methacrylate ) and alkyl acrylates ( such as ethyl acrylate and n - butyl acrylate ). copolymers of n - vinylpyrrolidone and dimethylaminoethyl methacrylate , available from isp corporation as copolymer 845 , copolymer 937 and copolymer 958 ; copolymers of n - vinylpyrrolidone and dimethylaminopropylacrylamide or methacrylamide , available from isp corporation as styleze ® cc10 ; copolymers of n - vinylpyrrolidine and dimethylaminoethyl methacrylate ; copolymers of vinylcaprolactam , n - vinylpyrrolidone and dimethylaminoethylmethacrylate ; polyquaternium - 4 ( a copolymer of diallyldimonium chloride and hydroxyethylcellulose ); polyquaternium - 11 ( formed by the reaction of diethyl sulphate and a copolymer of vinyl pyrrolidone and dimethyl aminoethylmethacrylate ), available from isp as gafquat ® 734 , 755 and 755n , and from basf as luviquat ® pq11 ; polyquaternium - 16 ( formed from methylvinylimidazolium chloride and vinylpyrrolidone ), available from basf as luviquat ® fc 370 , fc 550 , fc 905 and hm - 552 ; polyquaternium - 46 ( prepared by the reaction of vinylcaprolactam and vinylpyrrolidone with methylvinylimidazolium methosulphate ), available from basf as luviquat ® hold . examples of suitable naturally - derived polymers include shellac , alginates , gelatins , pectins , cellulose derivatives and chitosan or salts and derivatives thereof . commercially available examples include kytamer ® ( ex amerchol ) and amaze ® ( ex national starch ). also suitable for use as additional styling polymers in the compositions of the invention are the ionic copolymers described in wo 93 / 03703 , the polysiloxane - grafted polymers disclosed in wo 93 / 23446 , the silicone - containing polycarboxylic acid copolymers described in wo 95 / 00106 or wo 95 / 32703 , the thermoplastic elastomeric copolymers described in wo 95 / 01383 , wo 95 / 06078 , wo 95 / 06079 and wo 95 / 01384 , the silicone grafted adhesive polymers disclosed in wo 95 / 04518 or wo 95 / 05800 , the silicone macro - grafted copolymers taught in wo 96 / 21417 , the silicone macromers of wo 96 / 32918 , the adhesive polymers of wo 98 / 48770 or wo 98 / 48771 or wo 98 / 48772 or wo 98 / 48776 , the graft polymers of wo 98 / 51261 and the grafted copolymers described in wo 98 / 51755 . in certain embodiments of the invention , the styling polymer is preferably a copolymer having a backbone comprising a polyether and , depending from the backbone , a plurality of poly ( vinyl ester ) groups . at least some of the ester groups are hydrolysed to the corresponding alcohol , preferably at least 50 %, more preferably at least 75 %, most preferably at least 95 % of the groups are hydrolysed to the corresponding alcohol . the poly ( vinyl ester ) chains optionally contain other functional groups in and / or on the polymer chain , such as , for example , amide and / or keto groups . the copolymer has a polyether backbone which is obtainable by the polymerisation of one or more alkylene oxides . the polyether may comprise a single alkyleneoxy group or a mixture of two or more alkyleneoxy groups . the polyether may , for example , be based on ethylene oxide , propylene oxide , butylene oxide , other alkylene oxides , polyglycerol and mixtures thereof . optionally , the backbone comprises linkages other than those based on polyether , such as , for example , amide or keto linkages . preferably , the copolymer comprises a polyethyleneglycol backbone . the copolymer is preferably polyethyleneglycol - co - polyvinylalcohol having polyvinylalcohol groups bound to the polyethyleneglycol i . e ., subtantially all of the poly ( vinyl ester ) groups are preferably hydrolysed in the copolymers used in the compositions of the invention . the copolymer can be produced by methods which are well - known to those skilled in the art . for example , the copolymers are obtainable by graft polymerisation . in a method comprising graft polymerisation , poly ( vinyl ester ) groups are preferably grafted onto a polyether and are subsequently hydrolysed to convert at least some of the ester groups to the corresponding alcohol . for example , de 1 077 430 , the contents of which are incorporated herein by reference , describes a process for the preparation of graft polymers of vinyl esters on polyalkylene glycols . the preparation of graft copolymers of polyvinyl alcohol on polyalkylene glycols by hydrolysis of the vinyl esters is described in de 1 094 457 and de 1 081 229 , both also incorporated herein by reference . the weight average molecular weight of the polyether is preferably from 1 to 100 kda . preferred copolymers for use in compositions of the invention have a molar ratio of polyether to total poly ( vinyl ester ) and polyvinylalcohol groups in the range of from about 95 : 5 to 5 : 95 , more preferably about 30 : 70 to about 50 : 50 . typically , such copolymers have a molar ratio of polyether to total poly ( vinyl ester ) and polyvinylalcohol groups of about 40 : 60 . the copolymer may be non - cross - linked or cross - linked and it is preferred that the copolymer is cross - linked . suitable cross - linking agents are those compounds which can bind to two or more polyether , poly ( vinyl ester ) and / or poly ( vinyl alcohol ) chains and include , for example , pentaerythritol triallyl ether . the compositions of the invention may comprise a surfactant in addition to that required for the preparation of any psa emulsion . the surfactants which are suitable for use in the compositions of the invention may be nonionic , cationic , anionic , zwitterionic or a mixture of such surfactants depending on the product form . the hair styling compositions of the invention preferably comprise a non - ionic surfactant , in an amount of up to 5 %, preferably from 0 . 01 % to 1 %, most preferably from 0 . 02 % to 0 . 8 % by weight based on total weight . examples of suitable non - ionic surfactants are condensation products of aliphatic ( c8 - c 18 ) primary or secondary linear or branched chain alcohols or phenols with alkylene oxides , usually ethylene oxide and generally having at least 15 , preferably at least 20 , most preferably from 30 to 50 ethylene oxide groups . other suitable non - ionics include esters of sorbitol , esters of sorbitan anhydrides , esters of propylene glycol , fatty acid esters of polyethylene glycol , fatty acid esters of polypropylene glycol , ethoxylated esters and polyoxyethylene fatty ether phosphates . of particular use are those non - ionic surfactants of general formula r ( eo ) x h , where r represents a straight or branched chain alkyl group having an average carbon chain length of 12 - 18 carbon atoms and x ranges from 30 to 50 . specific examples include steareth - 40 , steareth - 50 , ceteareth - 30 , ceteareth - 40 , ceteareth - 50 and mixtures thereof . suitable commercially available examples of these materials include unicol sa - 40 ( universal preserv - a - chem ), empilan km50 ( albright and wilson ), nonion ps - 250 ( nippon oils & amp ; fats ), volpo cs50 ( croda inc ), and incropol cs - 50 ( croda inc ). compositions of the present invention can also include water , preferably distilled or de - ionised , as a carrier for the psas , when used in an emulsion form in addition to it being a carrier or a solvent for other components . when present the water will typically be present in amounts ranging from 30 % to 98 %, preferably from 50 % to 95 % by weight . compositions of the present invention can also include solvents , as a carrier or solvent for the psas and other components . when present the solvent will typically be present in amounts ranging from 30 % to 98 %, preferably from 50 % to 95 % by weight . examples of solvents are hydrocarbons , esters , alcohols etc . hair conditioning agents such as hydrocarbons , esters , silicone fluids , and cationic materials may be included in the compositions of the invention . hair conditioning agents may typically be present in compositions of the invention in amounts of from 0 . 001 % to 10 % by weight , preferably 0 . 1 % to 3 % by weight . hair conditioning agents may be single compounds or mixtures of two or more compounds from the same class or different general classes . hair conditioning agents may be included in any of the compositions of the invention , regardless of whether they contain a hair styling polymer . in one embodiment of the invention , the compositions ( such as aerosol mousse formulations , for example ) comprise a hair conditioning agent and are substantially free of hair styling polymer . suitable hydrocarbons can be either straight or branched chain and can contain from about 10 to about 16 , preferably from about 12 to about 16 carbon atoms . examples of suitable hydrocarbons are decane , dodecane , tetradecane , tridecane , and mixtures thereof . suitable oily or fatty materials are selected from hydrocarbon oils , fatty esters and mixtures thereof . straight chain hydrocarbon oils will preferably contain from about 12 to about 30 carbon atoms . also suitable are polymeric hydrocarbons of alkenyl monomers , such as c 2 - c 6 alkenyl monomers . specific examples of suitable hydrocarbon oils include paraffin oil , mineral oil , saturated and unsaturated dodecane , saturated and unsaturated tridecane , saturated and unsaturated tetradecane , saturated and unsaturated pentadecane , saturated and unsaturated hexadecane , and mixtures thereof . branched - chain isomers of these compounds , as well as of higher chain length hydrocarbons , can also be used . suitable fatty esters are characterised by having at least 10 carbon atoms , and include esters with hydrocarbyl chains derived from fatty acids or alcohols , monocarboxylic acid esters include esters of alcohols and / or acids of the formula r ′ coor in which r ′ and r independently denote alkyl or alkenyl radicals and the sum of carbon atoms in r ′ and r is at least 10 , preferably at least 20 . di - and trialkyl and alkenyl esters of carboxylic acids can also be used . particularly preferred fatty esters are mono -, di - and triglycerides , more specifically the mono -, di -, and tri - esters of glycerol and long chain carboxylic acids such as c 1 - c 22 carboxylic acids . preferred materials include cocoa butter , palm stearin , sunflower oil , soyabean oil and coconut oil . the oily / fatty material is suitably present at a level of from 0 . 05 to 10 , preferably from 0 . 2 to 5 , more preferably from about 0 . 5 to 3 wt %. examples of suitable silicone conditioning agents useful herein can include either cyclic or linear polydimethylsiloxanes , phenyl and alkyl phenyl silicones , and silicone copolyols . cationic conditioning agents useful herein can include quaternary ammonium salts or the salts of fatty amines , such as cetyl ammonium chloride , for example . compositions according to the invention may , optionally , comprise from 0 . 1 % to 10 % by weight of a volatile silicone as the hair conditioning agent . volatile silicones are well known in the art and are commercially available and include , for example linear and cyclic compounds . volatile silicone oils are preferably linear or cyclic polydimethylsiloxanes containing from about three to about nine silicon atoms . the compositions of the invention may optionally comprise a cross - linked silicone polymer . the cross - linked silicone polymer is preferably a non - rigid emulsion - polymerised and may be present in compositions of the invention in an amount of up to 10 % by weight based on the total weight of the composition , more preferably from 0 . 2 % to 6 % by weight , most preferably from 0 . 5 to 5 % by weight . preferred silicone polymers for use in the invention are polydiorganosiloxanes , preferably derived from suitable combinations of r 3 sio 0 . 5 units and r 2 sio units where each r independently represents an alkyl , alkenyl ( e . g ., vinyl ), alkaryl , aralkyl , or aryl ( e . g . phenyl ) group . r is most preferably methyl . the preferred silicone polymers of the invention are cross - linked polydimethyl siloxanes ( which have the ctfa designation dimethicone ), and cross - linked polydimethyl siloxanes having end groups such as hydroxyl ( which have the ctfa designation dimethiconol ). good results have been obtained with cross - linked dimethiconol . cross - linking of the silicone polymer is typically introduced concurrently during emulsion polymerisation of the polymer through the inclusion of the required amount of trifunctional and tetrafunctional silane monomer units , for example , those of formula : r si ( oh ) 3 wherein r represents an alkyl , alkenyl ( e . g . vinyl ), alkaryl , aralkyl or aryl ( e . g . phenyl ) group , preferably methyl . the degree of cross - linking of the silicone polymer can be measured as the percentage of branched monomer units in the silicone polymer and is from 0 . 05 % to 10 %, preferably being in the range 0 . 15 % to 7 %, e . g . from 0 . 2 % to 2 %. increasing cross - linking is found to improve styling benefits but also to reduce conditioning performance somewhat , so compromise levels must be selected with properties optimised to suit consumer preferences in different cases . good overall performance has been obtained with dimethiconol 0 . 3 % cross - linked . suitable emulsion polymerised cross - linked silicone polymers are commercially available or can be readily made using conventional techniques well known to those skilled in the art . cross - linked silicone polymers are described in ep 818190 , the contents of which are incorporated herein by reference . the compositions of the invention may optionally comprise cationic surfactants , used singly or in admixture . cationic surfactants useful in compositions of the invention contain amino or quaternary ammonium hydrophilic moieties , which are positively charged when , dissolved in the aqueous composition of the present invention . examples of suitable cationic surfactants are those corresponding to the formula : in which r 1 , r 2 , r 3 , and r 4 are independently selected from ( a ) an aliphatic group of from 1 to 22 carbon atoms , or ( b ) an aromatic , alkoxy , polyoxyalkylene , alkylamido , hydroxyalkyl , aryl or alkylaryl group having up to 22 carbon atoms ; and x is a salt - forming anion such as those selected from halogen , ( e . g . chloride , bromide ), acetate , citrate , lactate , glycolate , phosphate nitrate , sulphate , and alkylsulphate radicals . the aliphatic groups can contain , in addition to carbon and hydrogen atoms , ether linkages , and other groups such as amino groups . the longer chain aliphatic groups , e . g ., those of about 12 carbons , or higher , can be saturated or unsaturated . the most preferred cationic surfactants for conditioner compositions of the present invention are monoalkyl quaternary ammonium compounds in which the alkyl chain length is c8 to c14 . in which r 5 is a hydrocarbyl chain having 8 to 14 carbon atoms or a functionalized hydrocarbyl chain with 8 to 14 carbon atoms and containing ether , ester , amido or amino moieties present as substituents or as linkages in the radical chain , and r 6 , r 7 and r 8 are independently selected from ( a ) hydrocarbyl chains of from 1 to about 4 carbon atoms , or ( b ) functionalized hydrocarbyl chains having from 1 to about 4 carbon atoms and containing one or more aromatic , ether , ester , amido or amino moieties present as substituents or as linkages in the radical chain , and x is a salt - forming anion such as those selected from halogen , ( e . g . chloride , bromide ), acetate , citrate , lactate , glycolate , phosphate nitrate , sulphate , and alkylsulphate radicals . the functionalised hydrocarbyl chains ( b ) may suitably contain one or more hydrophilic moieties selected from alkoxy ( preferably c 1 - c 3 alkoxy ), polyoxyalkylene ( preferably c 1 - c 3 polyoxyalkylene ), alkylamido , hydroxyalkyl , alkylester , and combinations thereof . preferably the hydrocarbyl chains r 1 have 12 to 14 carbon atoms , most preferably 12 carbon atoms . they may be derived from source oils which contain substantial amounts of fatty acids having the desired hydrocarbyl chain length . for example , the fatty acids from palm kernel oil or coconut oil can be used as a source of c8 to c12 hydrocarbyl chains . typical monoalkyl quaternary ammonium compounds of the above general formula for use in shampoo compositions of the invention include : ( i ) lauryl trimethylammonium chloride ( available commercially as arquad c35 ex - akzo ); cocodimethyl benzyl ammonium chloride ( available commercially as arquad dmcb - 80 ex - akzo ) [ n ( r 1 )( r 2 )(( ch 2 ch 2 o ) x h )(( ch 2 ch 2 o ) y h )] + ( x ) − r 1 is a hydrocarbyl chain having 8 to 14 , preferably 12 to 14 , most preferably 12 carbon atoms or a functionalised hydrocarbyl chain with 8 to 14 , preferably 12 to 14 , most preferably 12 carbon atoms and containing ether , ester , amido or amino moieties present as substituents or as linkages in the radical chain ; r 2 is a c 1 - c 3 alkyl group or benzyl group , preferably methyl , and x is a salt - forming anion such as those selected from halogen , ( e . g . chloride , bromide ), acetate , citrate , lactate , glycolate , phosphate nitrate , sulphate , methosulphate and alkylsulphate radicals . suitable examples are peg - n lauryl ammonium chlorides ( where n is the peg chain length ), such as peg - 2 cocomonium chloride ( available commercially as ethoquad c12 ex - akzo nobel ); peg - 2 cocobenzyl ammonium chloride ( available commercially as ethoquad cb / 12 ex - akzo nobel ); peg - 5 cocomonium methosulphate ( available commercially as rewoquat cpem ex - rewo ); peg - 15 cocomonium chloride ( available commercially as ethoquad c / 25 ex - akzo ) [ n ( r 1 )( r 2 )( r 3 )(( ch 2 ) n oh )] + ( x ) − r 1 is a hydrocarbyl chain having 8 to 14 , preferably 12 to 14 , most preferably 12 carbon atoms ; r 2 and r 3 are independently selected from c 1 - c 3 alkyl groups , and are preferably methyl , and x − is a salt - forming anion such as those selected from halogen , ( e . g . chloride , bromide ), acetate , citrate , lactate , glycolate , phosphate nitrate , sulphate , and alkylsulphate radicals . suitable examples are lauryldimethylhydroxyethylammonium chloride ( available commercially as prapagen hy ex - clariant ) mixtures of any of the foregoing cationic surfactants compounds may also be suitable . quaternary ammonium chlorides , e . g . alkyltrimethylammonium chlorides wherein the alkyl group has from about 8 to 22 carbon atoms , for example octyltrimethylammonium chloride , dodecyltrimethylammonium chloride , hexadecyltrimethylammonium chloride , cetyltrimethylammonium chloride , octyldimethylbenzylammonium chloride , decyldimethylbenzylammonium chloride , stearyldimethylbenzylammonium chloride , didodecyldimethylammonium chloride , dioctadecyldimethylammonium chloride , tallow trimethylammonium chloride , cocotrimethylammonium chloride , and the corresponding salts thereof , e . g ., bromides , hydroxides . cetylpyridinium chloride or salts thereof , e . g ., chloride in the conditioners of the invention , the level of cationic surfactant is preferably from 0 . 01 to 10 , more preferably 0 . 05 to 5 , most preferably 0 . 1 to 2 wt % of the total composition . conditioner compositions of the invention preferably additionally comprise a fatty alcohol material . the combined use of fatty alcohol materials and cationic surfactants in conditioning compositions is believed to be especially advantageous , because this leads to the formation of a lamellar phase , in which the cationic surfactant is dispersed . by “ fatty alcohol material ” is meant a fatty alcohol , an alkoxylated fatty alcohol , or a mixture thereof . representative fatty alcohols comprise from 8 to 22 carbon atoms , more preferably 16 to 20 . examples of suitable fatty compositions of the present invention are formulated into hair styling compositions which may take a variety of forms , including , for example , mousses , gels , lotions , creams , sprays and tonics . these product forms are well known in the art . the compositions of the invention are preferably foaming compositions . foaming compositions are those compositions which are capable of forming a foam on dispensation from a suitable container , such as a pressurised aerosol container . more preferably are in the form of an aerosol hair mousse . aerosol - form compositions of the invention will include an aerosol propellant which serves to expel the other materials from the container , and forms the mousse character in mousse compositions . the aerosol propellant included in styling compositions of the present invention can be any liquefiable gas conventionally used for aerosol containers . examples of suitable propellants include dimethyl ether and hydrocarbon propellants such as propane , n - butane and iso - butane . the propellants may be used singly or admixed . water insoluble propellants , especially hydrocarbons , are preferred because they form emulsion droplets on agitation and create suitable mousse foam densities . the amount of the propellant used is governed by normal factors well known in the aerosol art . for mousses the level of propellant is generally up to 35 %, preferably from 2 % to 30 %, most preferably from 3 % to 15 % by weight based on total weight of the composition . if a propellant such as dimethyl ether includes a vapour pressure suppressant ( e . g . trichloroethane or dichloromethane ), for weight percentage calculations , the amount of suppressant is included as part of the propellant . for aerosol sprays the levels of propellant are usually higher ; preferably from 30 to 98 wt % of the total composition , more preferably 50 to 95 wt %. preferred propellants are selected from propane , n - butane , isobutane , dimethyl ether and mixtures thereof . preferably , the propellant comprises dimethyl ether and at least one of propane , n - butane and isobutane . the method of preparing aerosol hair styling mousse compositions according to the invention follows conventional aerosol filling procedures . the composition ingredients ( not including the propellant ) are charged into a suitable pressurisable container which is sealed and then charged with the propellant according to conventional techniques . compositions of the invention may also take a non - foaming product form , such as a hair styling cream or gel . such a cream or gel will include a structurant or thickener , typically at a level of from 0 . 1 % to 10 %, preferably 0 . 5 % to 3 % by weight based on total weight . examples of suitable structurants or thickeners are polymeric thickeners such as carboxyvinyl polymers . a carboxyvinyl polymer is an interpolymer of a monomeric mixture comprising a monomeric olefinically unsaturated carboxylic acid , and from about 0 . 01 % to about 10 % by weight of the total monomers of a polyether of a polyhydric alcohol . carboxyvinyl polymers are substantially insoluble in liquid , volatile organic hydrocarbons and are dimensionally stable on exposure to air . suitably the molecular weight of the carboxyvinyl polymer is at least 750 , 000 , preferably at least 1 , 250 , 000 , most preferably at least 3 , 000 , 000 . preferred carboxyvinyl polymers are copolymers of acrylic acid cross - linked with allylsucrose or allylpentaerythritol as described in u . s . pat . no . 2 , 798 , 053 . these polymers are provided by b . f . goodrich company as , for example , carbopol 934 , 940 , 941 and 980 . other materials that can also be used as structurants or thickeners include those that can impart a gel - like viscosity to the composition , such as water soluble or colloidally water soluble polymers like cellulose ethers ( e . g . methylcellulose , hydroxyethylcellulose , hydroxypropylmethylcellulose and carboxymethylcellulose ), guar gum , sodium alginate , gum arabic , xanthan gum , polyvinyl alcohol , polyvinyl pyrrolidone , hydroxypropyl guar gum , starch and starch derivatives , and other thickeners , viscosity modifiers , gelling agents , etc . it is also possible to use inorganic thickeners such as bentonite or laponite clays . the hair styling compositions of the invention can contain a variety of non - essential , optional components suitable for rendering the compositions more aesthetically acceptable or to aid use , including discharge from the container , of the product . such conventional optional ingredients are well known to those skilled in the art , e . g . preservatives such as benzyl alcohol , methyl paraben , propyl paraben and imidazolidinyl urea , fatty alcohols such as cetearyl alcohol , cetyl alcohol and stearyl alcohol , ph adjusting agents such as citric acid , succinic acid , sodium hydroxide and triethanolamine , colouring agents such as any of the fd & amp ; c or d & amp ; c dyes , perfume oils , chelating agents such as ethylenediamine tetraacetic acid , and polymer plasticising agents such as glycerin and propylene glycol the invention will now be further illustrated by the following , non - limiting examples . examples of the invention are illustrated by a number , comparative examples are illustrated by a letter . dc ® dc ® dc ® dc ® 5 - 7300 5 - 7200 5 - 7200 5 - 7200 product code 18393 - 45 17724 - 65 - a 17724 - 65 - b 17724 - 65 - c % internal phase 60 60 60 60 ( solvent + psa ) psa : solvent ratio 40 : 60 60 : 40 60 : 40 60 : 40 solvent isodo - 1 cst pdms 1 cst pdms 1 cst pdms decane resin : polymer 65 : 35 65 : 35 65 : 35 55 : 45 ratio particle size 4 . 312 μm 10 μm 4 μm 14 μm d50 ( microtrack ) emulsifier anionic anionic anionic anionic raw material % wt . raw ingredient trade name supplier material psa emulsion 1 dc ® 5 - 7200 dow corning 2 . 8 17724 - 65 - c cetearyl alcohol laurex cs albright & amp ; 0 . 64 wilson behenyl trimethyl genamin kdmp clariant 0 . 32 ammonium chloride isopropyl isopropyl uniqema 2 myristate myristate cationic acrylic salcare sc96 allied 1 . 2 homopolymer colloids dispersed in an emollient ester 18 trained panellists used the both prototype formulations and a control in duplicate for three days each in their homes and have scored the products using a 100 point scale on a number of attributes including stickiness of hair and stickiness of hand . 4 a raw % wt . % wt . material active active ingredient trade name supplier ingredient ingredient dc ® — dow 1 . 7 5 - 7200 corning 17724 - 65 - b copolymer of luviquat * basf plc 2 3 - methyl - 1 - fc550 vinyl - 1h - imidazolium chloride and 1 - vinyl - 2pyrrolidone ( 50 : 50 ) cetearyl laurex cs albright 0 . 6 0 . 6 alcohol & amp ; wilson behenyl genamin clariant 0 . 3 0 . 3 trimethyl kdmp ammonium chloride isopropyl isopropyl uniqema 2 2 myristate myristate polyoxy - emalex nihon 1 1 ethylene ( 10 ) 710 emulsion lauryl ether co ., ltd propane / cap 40 calor gas 8 8 butane gas water deionised local up to 100 up to 100 water supply the panellists typically apply 5 g of product to their hair . they typically wash their hair every night and apply the mousse to their hair the following morning following their usual styling routine . the panellists used each product for 3 consecutive days and scored it on the third day using the score - sheet provided . once all mousses have been evaluated in the order set out the test is completed . normalised average scores * (%) 4 a stickiness of hand − 9 16 stickiness of hair 3 9 volume down 8 6 example 4 gives similar volume control to comparative example a , but it is perceived as less sticky on hair and much less sticky on hands . the styling performance of two psa emulsions was compared to that of luviquat * fc550 a conventional styling polymer . a set of 5 2 g / 25 cm switches made from ‘ virgin ’ spanish hair was washed with 16 % wt . sles . 2eo . 1 ml solution was applied along the length of the hair and agitated for 30 sec . the switches were then rinsed with warm water for 30 sec . further 1 ml surfactant solution was applied and the hair was agitated for 30 sec again followed by 1 min rinse with warm water . the towel dried hair was then treated with the examples exemplified below : % active ingredient b 5 6 copolymer of 3 - luviquat * basf plc 1 . 2 methyl - 1 - vinyl - fc550 1h - imidazolium chloride and 1 - vinyl - 2pyrrolidone ( 50 : 50 ) psa emulsion dc ® 5 - 7200 dow 1 . 2 17724 - 65 - a corning psa emulsion dc ® 5 - 7300 calor gas 1 . 2 18393 - 45 polyoxyethylene emalex 710 nihon 1 1 1 ( 10 ) lauryl ether emulsion co ., ltd propane / butane cap40 cap 40 8 8 8 gas water local up to up to up to supply 100 100 100 1 g of mousse was applied to each set of 5 2 g / 25 cm hair switches ensuring even distribution . each switch was wound on a pegboard . the pegboards were then placed in a drying cabinet @ 65 ° c ./ 10 % rh for 3 h . prior removing the curls , the pegboards were left at ambient conditions for 30 min . the curls were then hung on a panel and placed in humidity chamber at 30 ° c ./ 90 % rh . the curls were photographed every 5 min and a record of the curl length was kept . the generated colour digital images were rendered into grey - scale format . the grey - scale images were subsequently converted into a binary form ( i . e . composed only of black and white pixels ). the dimensionless 2d projection area of each switch was used as a measure for the extent of switch spread out ( i . e . loss of curliness ). the projection area was calculated from the number of black pixels . the data were normalised by taking the ratio of the projection area to the average switch projection area calculated for the set of switches treated with example 6 . b 5 6 water normalised projection 1 . 34 ± 0 . 13 1 . 27 ± 0 . 13 1 2 . 2 + 0 . 13 area after 1 h & amp ; 30 ° c ./ 90 % rh the pressure sensitive adhesives give similar or better curl retention to that of the styling polymer . the styling performance of pressure sensitive adhesive emulsion was tested against conventional conditioning silicone and x - linked silicone used in styling formulations . % active ingredient 7 c d psa emulsion dc ® 5 - 7200 dow 1 . 2 17724 - 65 - a corning methylpolysiloxane dow dow 1 . 2 emulsion corning 2 - corning ( 1mmcs ) 1784 hvf emulsion cross - linked dow dow 1 . 2 methylpolysiloxane corning 2 - corning 1787 hvf emulsion polyoxyethylene emalex 710 nihon 1 1 1 ( 10 ) lauryl ether emulsion co ., ltd propane / butane cap40 cap 40 8 8 8 gas water local up to up to up to supply 100 100 100 three sets of 5 2 g / 25 cm ‘ virgin ’ spanish hair were washed and treated with formulations 7 , c and d as described above . the switches were then hung vertically and left to dry @ 20 ° c ./ 50 % rh . the dried switches were photographed and the obtained images were analysed in the manner described above to obtain the average normalised projection area , which was used as a measure of the extent of switch expansion . example 7 was used for control . 7 c d normalised projection area 1 1 . 8 ± 0 . 1 3 . 6 ± 0 . 4 the pressure sensitive adhesive gives much lower hair volume than the conditioning and the styling silicone .
a mousse , cream , lotion or spray leave on hair treatment composition comprising a silicone pressure sensitive adhesive .