Patents

Two-Step Long Wear Cosmetic Patented by L’Oréal

Tianyi Liu and Prasad S. Ranadive are involved in this formulation work.

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By: Christine Esposito

Editor-in-Chief

US Patent No. 11,517,518 B2  (Tianyi Liu, Prasad S. Ranadive); L'Oréal, Paris has patented a two-step cosmetic system. The first composition contains styrenic block copolymer, a silicone acrylate copolymer and volatile oil. The second composition includes a silicone oil with a viscosity between 100 cst and 1,000,000 cst, and wherein a critical strain of the system is less than 25%....

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