High SPF (30 and over) waterproof sunblock compositions

Details High SPF (30 and over) waterproof sunblock compositions High SPF (30 and over) waterproof sunblock compositions

1996-08-01

1998-06-23

Dodson, Shelley A.

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

424 60, 424400, 424401, 514844, 514846, 514847, 514873, 514937, 514938, 252309, A61K 742, A61K 700, B01J 1300

Patent

active

057701830

ABSTRACT:
A waterproof water-in-oil emulsion, wherein the aqueous phase consists predominately of deionized water and the oil phase includes sunscreen active ingredients, silicone emulsifiers, oil soluble solubilizers and skin conditioning agents. The emulsion provides sun protection higher than SPF 30 and is characterized in that the mean particle size of the oil phase ingredients is 2.0 Microns (.mu.). The particles of the emulsion are uniformly distributed and substantially of the same size to reduce gaps between particles thus reducing the amount of skin left exposed to ultra violet radiation. A method of manufacturing the emulsion is also disclosed.

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patent: 5216033 (1993-06-01), Pereira et al.
patent: 5256403 (1993-10-01), Gaskin
patent: 5292503 (1994-03-01), Raleigh et al.
patent: 5306485 (1994-04-01), Robinson et al.
patent: 5384115 (1995-01-01), Bissett et al.

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