Process for the manufacture of a solid cosmetic composition using plaster of paris and cosmetic composition thereby obtained

Abstract

Process for the manufacture of a solid cosmetic composition using plaster of Paris, in which: a pulverulent mixture (P) consisting of: 1) calcium sulphate hemihydrate (CaSO.sub.4.1/2 H.sub.2 O) in powder form, 2) a hydrophobic fraction (OF) comprising at least one fatty substance and/or at least one pulverulent substance treated by coating or chemical grafting so as to give it hydrophobic properties, 3) a hydrophilic fraction (IF) in powder form, is prepared, the weight proportion IF/OF being between 0.08 and 7.5; an aqueous phase (AP) in liquid form is prepared; the pulverulent mixture (P) and the aqueous phase (AP) are headed in a weight proportion P/AP of between 0.2 and 2, so as to obtain a pourable mixture; the pourable mixture is run into a mould; it is left to harden by hydration of the calcium sulphate hemihydrate to calcium sulphate dihydrate (CaSO.sub.4.2H.sub.2 O), and the product is removed from the mould.

Dependencies are inferred from the claim text.