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Kao Patents Hair Treatment

February 4, 2013

US Patent No. 8,277,784 B2; Kao has patented a hair treatment with the following steps: preparing the cosmetic by mixing a first agent comprising an alkali agent and a second agent comprising hydrogen peroxide to form a mixed liquid; discharging that liquid in the form of a foam; applying it to hair; allowing it to stand for 3-60 minutes; and rinsing it away. At least one of the agents comprises a surfactant. The cosmetic is selected from a two-agent hair bleach or a two-agent dye. The mixed liquid has a pH of 8-11, and comprises a nonvolatile hydrophilic solvent in an amount of 0.1 to 30% by weight of the mixed liquid.
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