Patent ID: 6805871
Filing Date: 2004-10-19
Classification: A61K,A61Q,Y10S

Abstract:
An oil-in water microemulsion comprising an oil phase and a water phase and:(a) at least one emulsifier (emulsifier A), chosen from the group consisting of emulsifiers having the following properties their lipophilicity is either dependent on the pH inasmuch as an increase or decrease in pH results in an increase or decrease in lipophilicity, it being unimportant which of the two possibilities of change in the lipophilicity is effected by the increase or the decrease in the pH, and/or their lipophilicity is dependent on the temperature inasmuch as the lipophilicity increases with increasing temperature and their hydrophilicity increases with decreasing temperature. (b) optionally further comprising substances which are soluble or dispersible in the oil phase or the water phase, (c) an effective amount of shea butter to reduce stickiness/greasiness of the oil-in-water emulsion which comprises 0.5% to 10% by weight of shea butter.