Posts Tagged ‘ phenylenediamine ’

#6–More Harmful Chemicals – Coal Tar Dyes

Jun 13th, 2011 | By Sharon Shaw Elrod MSW EdD | Category: For Senior Women

Coal tar is a combination of many chemicals derived from petroleum.  Some research suggests it is a human carcinogen and is used extensively in skin care products.  On product labels, they are identified by a five-digit Color-Index (CI) number.  The one used most in hair dyes is P-phenylenediamine.  The darker the dye, the more then [...]