聚乙烯吡咯烷酮。(成膜劑，有增稠作用)
Luviskol® K 90 Powder is a polyvinylpyrrolidone for use in cosmetic applications, specifically in hair gels, wetlook gels, hair mousses, pump sprays, and liquid hair setting preparations, as it provides a normal to strong hold. It is an aqueous solution that is soluble in water, ethanol, and isopropanol, with a slight characteristic odor. This product has a K value (1% in water) of 88.0-96.0, a solids content of 95.0-100.0%, and a pH value of 5.0-9.0.

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