Treatment of acne using alkonolamine compositions
View Patent ↗Acne is treated or prevented by the topical application of compositions containing an alkanolamine such as dimethylaminoethanol, tyrosine, and a sulfur ingredient such as lipoic acid or glutathione. Adjunct ingredients such as fatty acid esters of ascorbic acid, e.g., ascorbyl palmitate and α-hydroxy acids may be included in the formulations. Compositions of the invention may be used alone, or, in many preferable embodiments, in combination with conventional acne medications such as anti-acne products containing salicylic acid, benzoyl peroxide, or a retinoid. In these embodiments, alkanolamine compositions of the invention are applied to affected skin areas first, and then a conventional acne medication is applied. This maximizes the efficacy of the treatment while minimizing skin irritation caused by conventional medications.
1. A topical acne composition consisting of
a) from about 0.1% to about 10% by weight of an alkanolamine of the formula
wherein X, Y and Z are selected from the group consisting of hydrogen, C1–C3 alkyl groups, C2–C4 alkanol group, wherein at least one of X, Y, or Z is a C2–C4 alkanol group bearing at least one hydroxyl group and optionally at least one carboxyl group;
b) from about 0.01% to about 6% by weight tyrosine;
c) from about 0.01% to about 10% by weight of a sulfur-containing ingredient selected from the group consisting of lipoic acid, glutathione, and mixtures thereof;
d) a dermatologically acceptable carrier; and optionally, an adjunct ingredient selected from the group consisting an α-hydroxy acid, a fatty acid ester of ascorbic acid, and mixtures of any of these, wherein the topical composition is applied to skin and acts upon the skin to treat acne.
2. A composition according to claim 1 which consists of from about 0.03% to about 5% by weight dimethylaminoethanol, from about 0.03% to about 5% by weight tyrosine, and from about 0.1% to about 10% by weight lipoic acid, glutathione, and mixtures thereof.
3. A composition according to claim 2 which consists of from about 1% to about 3% by weight dimethylaminoethanol, from about 0.2% to about 0.5% by weight tyrosine, and from about 2% to about 7% by weight lipoic acid.
4. A composition according to claim 2 which consists of from about 1% to about 3% by weight dimethylaminoethanol, from about 0.2% to about 0.5% by weight tyrosine, and from about 5% to about 10% by weight glutathione.
5. A composition according to claim 1 wherein α-hydroxy acid is from about 1% to about 10% a by weight glycolic acid.