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Wella Patents Dyeing Agents



Published November 3, 2006
Related Searches: patent color hair
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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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