Micronized vitamin C formulation

Details Micronized vitamin C formulation Micronized vitamin C formulation

2006-09-05

2006-09-05

Sheikh, Humera N. (Department: 1615)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

C424S489000

Reexamination Certificate

active

07101563

ABSTRACT:
Stable vitamin C (L-ascorbic acid) compositions for topical application, comprising micronized L-ascorbic acid in a substantially non-aqueous carrier having a pH greater than that of skin, and preferably not lower than approximately 5.5 and not greater than approximately 7.5, are described. The composition may further comprise papain as an enzymatic exfoliant in addition to humectants, emollients, viscosity-increasing agents, surfactants, and preservatives. Methods of preparing the micronized L-ascorbic acid for use in the described formulations, by a “wet” micronization process, are also described. The compositions are useful as UV protectants, promoters of collagen synthesis and in the removal and/or treatment of wrinkles.

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