Skin lightening agents, compositions and methods

Details Skin lightening agents, compositions and methods Skin lightening agents, compositions and methods

2007-07-31

2007-07-31

Dodson, Shelley A. (Department: 1616)

Drug, bio-affecting and body treating compositions

Bleach for live hair or skin

C424S059000, C424S069000, C424S400000, C424S401000, C514S557000

Reexamination Certificate

active

11394250

ABSTRACT:
Cosmetic compositions and methods, particularly for skin lightening, using compound and derivatives of general formula I and/or II as skin lightening agents alone or in combination with other skin benefit agents and together with a cosmetic vehicle:Where each R, independently, represents a hydrogen atom, C1–C4acyl group, or C1–C4alkyl group. Preferably, the compound is 4-hydroxyphenylpyruvate, i.e., where each R in the formula I is Hydrogen.

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