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How does the presence of ammonium lauryl sulfate in shampoos affect hair dye?
I read on about.com that having ammonium lauryl sulfate in a shampoo will wash out semipermanent hair dyes quicker than shampoos without it. Out of curiosity, I read the labels for my sort of expensive color protecting shampoo and to my chargin it contained ammonium lauryl sulfate!! Does anyone know anything about this? I'd really love to preserve my hair color.
1 Answer
- Anonymous1 decade agoFavorite Answer
The substance is a detergent. Dyes which are solidly attached to the hair won't be much affected by it.