Company News, Patents

Wella Patents Dyeing Agents

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By: TOM BRANNA

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Wella Patents Dye Agents ● Patent No. US 7,122,061 B2: A colorant for oxidative dyeing of keratin fibers, particularly human hair, based on a developer-coupler combination, has been patented by Wella AG, Darmstadt, Germany. ●...

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