Chanel Patents Method To Produce Nonaqueous Skin Composition

US Patent No. 11,298,298 B2; (Masayoshi Miyamoto, Yoshihito Oda, Masahiro Goto); Chanel Parfums Beaute and Kyushu University, National University Corporation, Fukuoka, Japan, have patented a  method for producing a nonaqueous composition for external use on the skin.

It is comprised of a strongly hydrophilic amphiphilic solid active ingredient-surfactant complex dispersed in an oil phase. The active ingredient is selected from the group consisting of palmitoyl-L-carnitine, hydroxycitryl palmitate, ascorbyl phosphate palmitate, (ascorbyl/tocopheryl) phosphate, cyclic lysophosphatidic acid, and salts thereof.

The method, which is operated in the absence of water, is comprised of:
(a) dissolving a surfactant in an oil phase to obtain a surfactant solution;
(b) mixing the surfactant solution obtained in the step (a) with a strongly hydrophilic amphiphilic solid active ingredient to obtain a suspension; and
(c) allowing the suspension obtained in the step (b) to stand still to obtain a transparent composition.