09.02.19
US Patent No. 10,363,209 B2 (Chunwei Wu); Conopco, Inc., Englewood Cliffs, NJ, has patented a cosmetic composition comprising particles dispersed in a cosmetically acceptable carrier that is a water and oil emulsion. The particles, which are comprised of polymer, redox dye and reducing agent, are dispersed in the oil phase of the water and oil emulsion.