Famous Ppd Free Hair Color References. 200+ bought in past month. Web “paraphenylenediamine (ppd) is the coloring ingredient in some hair dyes,” says chiu.
It sounds fancy, but what is ppd in hair color? Web “paraphenylenediamine (ppd) is the coloring ingredient in some hair dyes,” says chiu. Nourishes and conditions the hair during colouring.
