Patents

Hair Treatment Patented by Kao

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By: TOM BRANNA

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US Patent No. 8,758,453 B2; Kao Germany GmbH, Darmstadt, has patented a process for treating hair in which hair is dyed with a composition comprising one or more hair dyes and at least one oxidizing agent. The composition is obtained by mixing two compositions prior to application onto hair. Composition A comprises one or more hair dyes and a second composition B comprises at least one oxidizing agent. In a further step, hair is treated with a third composition C comprising at least one surfacta...

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