04.28.23
US Patent No. 11,633,332 B2 (Zhi Li, Hy Si Bui); L’Oréal, Paris, has been awarded a US patent for cleansing composition that has at least three visually distinct phase layers. The first visually distinct phase layer has least one cosmetic solvent having a Hildebrand solubility parameter δ value that is greater than 15 cal1/2cm−3/2. The second visually distinct phase layer is comprised of at least one cosmetic solvent having a Hildebrand solubility parameter δ value less than 7.5 cal1/2cm−3/2. The third visually distinct phase layer has at least one cosmetic solvent having a Hildebrand solubility parameter δ value that is between 8 and 10 cal1/2cm−3/2.