Do you dye your hair - or change the color in any way?
Not at all, but I see a lot of people that do especially on my college campus.
The main reasons are cosmetic - to cover gray or to change to a more fashionable color - or even to correct bleaching by the sun
Most of the ones that I have seen are the girls that really like to dye their hair blue or red.
At home coloring has reached 1.9 billion and is expected to rise in the US
Really? That is a huge number of people!
I guess since it can be done by a hairdresser or at home, that at home is a lot cheaper.