Skin bleaching preparations

Details Skin bleaching preparations Skin bleaching preparations

1987-05-29

1988-12-20

Willis, Prince E.

Drug, bio-affecting and body treating compositions

Bleach for live hair or skin

252404, A62K 7135

Patent

active

047924438

ABSTRACT:
A skin bleaching skin preparation is disclosed. The preparation comprises hydroquinone, tertiary butyl hydroquinone, and optionally an additional stabilizer. The preparation can additionally contain a buffer to maintain the pH between about 3.5 and about 7.5. By maintaining this pH range in the presence of the tertiary butyl hydroquinone stabilizer, and optional additional stabilizers, the hydroquinone would not be oxidized, and thus the preparation would be characterized by an extended shelf life.

REFERENCES:
patent: 3855150 (1974-12-01), Weris
patent: 3856934 (1974-12-01), Kligman
patent: 4025645 (1977-05-01), Jelenko
patent: 4051257 (1977-09-01), Jelenko
patent: 4136166 (1979-01-01), Barnett et al.
patent: 4466955 (1984-08-01), Calvo et al.
patent: 4490330 (1984-12-01), Howes et al.
McCutchen's "Functional Materials," 1981, p. 23

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