- #1
shirleydesilva
- 1
- 0
I want to know what mechanism does it make hair dye product works on hair? Does it work only by coating on the hair surface or any special alteration of the bonding in hair?
and beside I want to ask there are products on the market such as "hot rod" which by means of electricity turn into heat and then make the hair wavy and then after washing the hair, it returns to normal, what mechnaism does this work? I know perming product change the waviness of hair by means of chnaging the bonding of the hair permanently, but just don't understand this.
and beside I want to ask there are products on the market such as "hot rod" which by means of electricity turn into heat and then make the hair wavy and then after washing the hair, it returns to normal, what mechnaism does this work? I know perming product change the waviness of hair by means of chnaging the bonding of the hair permanently, but just don't understand this.