Patents

Living Proof Patents Long-Lasting Hair Treatment

Comprises a polyurethane-urea crosslinked by at least one hydrocarbon based triol or tetraol.

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By: Christine Esposito

Editor-in-Chief

US Patent No. 12,048,760 B2 (Soo-Young Kang, Zhaoxia Ji, Ling-Fang Tseng, Dinara A. Villanueva); Living Proof, Inc., Boston, MA, has patented a hair treatment composition comprising a polyurethane-urea crosslinked by at least one hydrocarbon based triol or tetraol, wherein the polyurethane-urea is a salt of the formula: [Q, W, V, Y and Z]X. • Q is the product formed from polyisocyanate; • W is the product formed from polycarbonate polyol monomer; • V is the product formed from...

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