Compositions and methods for delivery of skin cosmeceuticals
OwnerCharles Fox, Terrence S. McGrathinventors
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Abstract
New cosmetic compositions are disclosed that are effective both as moisturizers and skin sloughing agents. The compositions contain neutralized weak organic acids that when applied over time to the skin in appropriate formulations will gradually increase in acidity to pH 5.5 or less, for example about pH 4.5, without causing skin irritation while exhibiting increasing activity in skin renewal effects.
Claims29
A composition comprising an ammonium salt of a weak organic acid combined with a time release polymer base formulation wherein the composition releases ammonia when in skin contact to provide a gradual decrease in pH to 5.5 or less.
A method of enhancing skin sloughing, comprising formulating a selected organic weak acid with a pharmaceutically acceptable emulsifying agent, neutralizing the acid with ammonia to a pH of 6.5-6.9 to form a dispersed ammonium salt, applying said ammonium salt to skin wherein the pH gradually lowers to 5.5 or less as ammonia evaporates causing a gradual enhancement of skin sloughing.
A method for treating acne, comprising applying an ammonium salt of salicylic acid dispersed in a formulation with an emulsifying agent and a lipid with sufficient water to allow gradual release of ammonia when in skin contact wherein the pH of the skin surface gradually lowers to a pH of 5.5 or less.
A method of enhancing skin sloughing, comprising formulating a selected organic weak acid with a pharmaceutically acceptable emulsifying agent, neutralizing the acid with ammonia to a pH of 6.5-6.9 to form a dispersed ammonium salt, applying said ammonium salt to skin wherein the pH gradually lowers to 5.5 or less as ammonia evaporates causing a gradual enhancement of skin sloughing.
Dependencies are inferred from the claim text.