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P&G Patents Hair Coloring Composition

Published August 17, 2006
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Patent No. US 7,066,967 B2: A hair coloring composition comprising at least one developer of 2,6-dihalo-para-aminophenol, at least one developer of para-phenylenediamine and at least one coupler of 3-acetamidophenol has been patented by Procter and Gamble Company, Cincinnati, OH.

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