Oil-in-water emulsion formulation containing free and...

Details Oil-in-water emulsion formulation containing free and... Oil-in-water emulsion formulation containing free and...

2005-05-24

2005-05-24

Spear, James M. (Department: 1615)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

C424S489000, C514S844000, C514S938000, C514S951000, C514S772300

Reexamination Certificate

active

06896890

ABSTRACT:
An oil-in-water emulsion formulation containing hydroquinone and retinol, which comprises an oil-in-water emulsion containing free hydroquinone, hydroquinone entrapped in absorbent micro-agglomerates and/or impregnated in porous microparticles; and retinol-impregnated microparticles.

REFERENCES:
patent: 5851538 (1998-12-01), Froix et al.
patent: 5976555 (1999-11-01), Liu et al.

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