I am not sure if this is the right category for this type of question, but here it is. I am looking for a hair dye that is cruelty free and vegan that does not contain the chemical PPD (P-Phenylenediamine). I understand that this is not approved by the FDA to be used on skin, except through hair dyes. Paraphenylenediamine (PPD) is a chemical substance that is widely used as a permanent hair dye. It may also been found in textile or fur dyes, dark coloured cosmetics, temporary tattoos, photographic developer and lithography plates, photocopying and printing inks, black rubber, oils, greases and gasoline. So far, I have not found a hair dye that doesn't contain this, except for henna, pure henna. With henna, I can't get an ash color or light brown color. Please help, any suggestions.
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