US Patent No. 12,472,128 B2 (Lina Dupuis and Cyril Gibert); Chanel Parfums Beaute, Neuilly sur Seine France, patented a solid cosmetic composition comprising: at least 15% by weight of a volatile liquid fatty phase comprising C8-C16 branched alkanes, and 40% to 85% by weight of a powdery phase comprising spherical fillers which are surface-treated with a metallic soap, wherein the spherical fillers are cellulose microspheres, and wherein the metallic soap is chosen from zinc borate, magnesium stearate, magnesium myristate, zinc stearate and mixtures thereof.

The patent details a method for preparing a composition comprising pre-mixing of the powders constituting the powdery phase; preparing a fatty binder comprising the volatile liquid fatty phase and the film-forming polymer; mashing of the powders with the fatty binder by extrusion; and shaping of the composition by pressing.