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Re: Thanks and questionsPosted by Al Gisnered on July 6, 2004 at 11:53:07: In reply to: Re: Thanks and questions posted by Pierre on July 5, 2004 at 18:02:42: : Henna penetrates and binds to keratin. PPD sits on the surface. You don't need to : open the cuticle. You're a much better chemist than I'll ever be. I have obviously misconstrued something I've read on the various sites I've been on, or been misinformed on one of the sites. Anyway, is there a way to increase the deposit of the henna colorant on hair? I'm thinking change the pH (or is it Ph)?
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