Patent ID: 8501234
Filing Date: 2013-08-06
Classification: A61K,A61P,A61Q

Abstract:
1. A reverse vesicle composition comprising the following ingredients (A), (B), (C), (D), and (F): (A) a sphingosine represented by formula (1): from 0.001 to 10 mass % based on the total composition, wherein R wherein when Y is a methine group, one of X each of R (B) a C16 to C30 fatty acid, from 0.001 to 10 mass % based on the total composition, (C) a hydrocarbon oil, from 0.1 to 50 mass % based on the total composition, (D) an ester oil which is in liquid form at 25° C., from 0.01 to 50 mass % based on the total composition, and (F) water, wherein the ratio by mass of ingredient (C) to ingredient (D) satisfies the following relationship: 1≦(C)/(D)<1000, and the composition contains a surfactant having a molecular weight of 1,000 or less in an amount of 1 mass % or less, and wherein the reverse vesicle composition has a reverse vesicle structure in which the vesicle interface is a lipid bi-layer membrane and in which there is anisotropy at the vesicle interface.