yes I am a hairdresser by trade and I am trying to find info for a client of mine.she has both breasts removed in the past due to cancer and she is now on a medication called Letrozole 2.5mg and the company name is Sandoz.She is experiencing hair loss everytime  I wash her hair and I am not sure if she should have a perm done on it.The perm has hydrodin perxiode in it along with other chemicals.would it be safer to use a thio-free perm or no perm at all
Hello, Perming involves rebounding of disulfide bonds that give tensile strength to the hair. So ideally she should avoid perming as it would weaken the hair. Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor. , Dermatologist