US 6,203,791 B1 · Lecithin-based microemulsions containing proteolytic enzymes and method for permanent enzymic depilation

Abstract

The invention refers to depilatory preparations containing: proteolytic enzymes solubilized in microemulsions, formed with lecithin, aliphatic hydrocarbon, alipathic alcohol and buffer solution pH 7 to 9, value corresponding to the pH range near the optimum pH value for the catalytic activity of the proteolytic enzymes, to be applied for permanent enzymic depilation. The application of these preparations will assure, as shown by our experimental studies, more permanent depilation than the one resulting from other depilatory methods. The application of these preparations is suitable for every type of skin (fatty-resistant or dry-sensitive). The present invention introduces the use of microemulsions as a medium for the facilitated penetration of the enzymic activity in the epithelial cells of the skin, as shown by our studies.

Claims20

Dependent claims

A two part depilatory kit comprising first and second components which when combined together can effectively be spread on the skin to initiate depilatory activity, wherein comprises the following ratio of ingredients:

40 to 150 mg of a lecithin;
1.5 to 2 ml of an aliphatic hydrocarbon;
optionally up to 0.5 ml of an aliphatic alcohol;
and
an amount of a buffer solution sufficient to provide a pH of 7 to 9,
the second component comprises the following ratio of ingredients:
water;
and
a proteolytic enzyme in an amount sufficient to provide a proteolytic enzyme concentration of the second component of from 1 to 5 mg/ml,
and wherein the proteolytic enzyme concentration of the combination of the first and second components is from 0.01 to 0.1 mg/ml in a microemulsion.

7 more elements

Dependencies are inferred from the claim text.

Lecithin-based microemulsions containing proteolytic enzymes and method for permanent enzymic depilation

Life of this patent

Lecithin-based microemulsions containing proteolytic enzymes and method for permanent enzymic depilation

Life of this patent

Abstract

Claims20