The present invention concerns stabilized cosmetic material containing triple-encapsulated
retinol. Unstable, fat-soluble retinol is stabilized firstly by addition into vesicles
consisting of nonionic surface-active agent, cholesterol and cholesteryl ester.
The firstly stabilized retinol(vesicle) is subsequently inserted into sphingosomes
(a kind of multi lamellar liposome) consisting of lecithin and ceramide. Finally
the double-encapsulated retinol (sphingosome) is inserted into lamellar liquid-crystal
emulsifying base, thereby being triply encapsulated.
