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Don't henna over dye
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Posted by Catherine Cartwright Jones on November 17, 1999 at 02:00:21:
In Reply to: I wonder..... posted by Shel on November 16, 1999 at 22:52:11:
If you henna over dye, you get bizarre effects, black, green, high wierdness, because henna reacts with the ammonia in the dyes, and if hair is extremely porous from dyeing, the quinone part of the molecule can produce greens and blues. The most unfortunate part is that the high wierdness is very unpredictable!
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