Aqueous progressive hair colorant having soluble sulfur source and amphoteric surfactant
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United States of America Patent
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Mar 9, 1993
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N/A
app pub date -
Feb 12, 1992
filing date -
Sep 4, 1990
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Expired
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Abstract
A clear, aqueous, shelf-stable progressive hair coloring composition includes a salt of a metal, a soluble source of sulfur, an amphoteric surfactant and a pH controller that controls the pH of the composition to be within the range of about 7.5 to about 11.0. Preferred metallic salts are salts of lead or bismuth and the preferred sulfur source is sodium thiosufate.
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