Cosmetic preservative
AssigneeLever Brothers Company
InventorRaymond Drakoff
Life of this patent
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Abstract
This invention reveals the preparation of aqueous preservative cosmetics subject ot Maillard reaction employing sodium hydroxymethane sulfonate which provides a time released sterilizing and anti-browning effect in cosmetic compositions containing amino or nitro groups, polyhydroxy compounds or sugars and having a pH of about 7.0 or higher. Potassium, ammonium and other cationic forms of hydroxymethane sulfonate and mixtures thereof may also be employed.
Claims7
A cosmetic composition susceptible to degradation due to bacterial action and to browning due to the Maillard reaction which comprises:
- (a) a hydroxymethane sulfonate salt in an amount sufficient to produce a preservative effect simultaneously against said bacterial action and said browning wherein the cation of said salt is selected from the group consisting of sodium, potassium, ammonium and mixtures thereof;
- and
- (b) an aqueous cosmetic formulation having a pH value of about 7.0 to 9.5.
A cosmetic composition susceptible to degradation due to bacterial action and to browning due to the Maillard reaction which comprises:
- (a) sodium hydroxymethane sulfonate in an amount sufficient to produce a preservative effect simultaneously against said bacterial action and said browning;
- and
- (b) an aqueous cosmetic formulation having a pH value of about 7.0 to 9.5.
A method for substantially preserving an aqueous cosmetic from degradation due to bacterial action and from browning due to the Maillard reaction comprising treating said cosmetic with a sufficient amount of sodium hydroxymethane sulfonate to effect said preservation when the pH of said cosmetic is about 7.0 to 9.5.
Dependencies are inferred from the claim text.