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Hair Dyes There is no hair dye which produces a durable coloration; the colour becomes gradually weaker in the course of time. Here are some typical formulas in which a mordant is employed:
1. nitrate
of silver
... ½ ounce
2:- Ammonia water sufficient to make a clear solution.
Dissolve the nitrate of silver in the water and add the
ammonia water until the precipitate is redissolved. |
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