Emulsified, low ph cosmetic compositions having improved stabili

Details Emulsified, low ph cosmetic compositions having improved stabili Emulsified, low ph cosmetic compositions having improved stabili

1995-03-17

1996-10-22

Venkat, Jyothsna

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

514937, 514938, 514939, 514943, A61K 742

Patent

active

055674275

ABSTRACT:
Emulsified, low pH cosmetic compositions having improved pH stability and phase stability are disclosed. The emulsified cosmetic compositions have a pH of about 3.7 to about 4.5, and contain about 10% to about 50% by weight of a dispersed oil phase, about 2% to about 20% by weight of an acid, like a hydroxycarboxylic acid, and about 0.5% to about 2% of a quaternized phosphate ester, like linoleamidopropyl PG-dimonium chloride phosphate. The emulsified cosmetic compositions are phase stable over an extended storage period and maintain an essentially constant pH by exhibiting a pH drift of about 0.15, and usually 0.1, pH unit or less.

REFERENCES:
patent: 4209499 (1980-06-01), Mayhew et al.
patent: 4503002 (1985-03-01), Mayhew et al.
patent: 5073372 (1991-12-01), Turner et al.
M. Takahashi et al., "The influence of hydroxy acids on the rheological properties of statum corneum," J. Soc. Cosmet. Chem., 36 (Mar./Apr. 1985), pp. 177-187.
D. L. Fost, "Cationic Emulsification In Creams & Lotions," Drug and Cosmetic Industry, Oct. 1985 (reprint).
M. Asnes, "A Skin Miracle," Mirabella, Jan. 1993, pp. 60-61.
Anon, "Fruit Acids: The New Beauty Miracle," pp. 76-77.
R. Berg, "Fruit Juice," New York Times, Dec. 12, 1992, p. 74.

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