Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2005-11-15
2005-11-15
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S059000
Reexamination Certificate
active
06964776
ABSTRACT:
The present invention addresses the problem of excessive discoloration in hydroquinone compositions of a neutral pH. Antioxidants in the hydroquinone phase and inorganic or amino acyl cationic salts of acidic ascorbyl esters, preferably sodium metabisulfite and magnesium ascorbyl phosphate respectively, are effective in stabilizing such hydroquinone compositions, which are used in treatment of pigmentation disorders. Protected retinoid may be added to these compositions for additional skin benefit effects.
REFERENCES:
patent: 4835191 (1989-05-01), Biegeleisen
Gans Eugene H.
Gordon Philip J.
Patel Bhiku G.
Wortzman Mitchell S.
Feehery Maryellen
Howard Sharon L.
McNichol, Jr. William J.
Medicis Pharmaceuticals Corporation
Page Thurman K.
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