Company News, Patents

Stable Aqueous Hair Dye

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By: TOM BRANNA

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Patent No. US 6,528,045 B1: Goldwell GmbH researchers in Germany were awarded a patent for the preparation of stable, aqueous hair dyeing emulsions, comprising at least one oxidation dyestuff precursor and a water-in-oil emulsion containing at least one nonionic emulsifier, at least one nonionic co-emulsifier, oleic acid and water....

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