Patents

Kao Patents Hair Treatment

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By: Christine Esposito

Editor-in-Chief

US Patent No. 9,554,972 B2; Kao Germany, Darmstadt, has patented a  leave-in hair conditioning composition in microemulsion form. It is comprised of, in a cosmetically acceptable aqueous medium: a surfactant as an emulsifier, one or more mineral oil and one or more silicone oil, and at least one polyethyleneglycol selected from the group consisting of PEG-20M, PEG-23M, PEG-25M, PEG-45M, PEG-90M, PEG-115M and PEG-160M. The composition is free of fatty alcohol and has a pH in the range of 5 to les...

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