Preparation of a self supporting cosmetic from a pigmented powde

Details Preparation of a self supporting cosmetic from a pigmented powde Preparation of a self supporting cosmetic from a pigmented powde

1986-11-20

1988-02-09

Naff, David M.

Drug, bio-affecting and body treating compositions

Live skin colorant containing

424 59, 424 60, 424 65, 424 69, 424DIG5, 514844, A61K 7021, A61K 742, A61K 732, A61K 7035

Patent

active

047241381

ABSTRACT:
Coherent powder compositions are formed by blending a powder phase containing at least 5 weight percent calcium sulfate hemihydrate with a liquid phase containing sufficient water to fully convert the hemihydrate to calcium sulfate dihydrate and drying the resultant blend. Uniformly pigmented products are formed by including a powdered pigment in the powder phase and 0.1 to 4.0 weight percent surfactant in the aqueous phase. Compositions suitable for use as cosmetic sticks are formed by employing at least 40 weight percent calcium sulfate hemihydrate. Preferably the products are formed by combining 40 to 60 parts by weight of aqueous phase with 50 parts by weight of powder phase. To improve pay-off characteristics the products are subjected to a temperature above 128.degree. C., the outer surface is abraded or up to 20 weight percent of the aqueous phase is glycerin or propylene glycol.

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