Abstract: The present invention relates to a novel retinol derivative and a cosmetic composition comprising the same, in particular, to a novel retinol derivative represented by the formula (I) exhibiting the effects from both L-ascorbic acid and retinol as well as being free from the disadvantages of two compounds such as skin irritation and instability in cosmetic formulation, and a cosmetic composition comprising the retinol derivative.

Abstract: 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.

Abstract: The present invention relates to cosmetic compositions and more particularly to skin-whitening cosmetic compositions comprising senkyunolide A as an active ingredient. The present invention discloses the novel inhibitory function of senkyunolide A isolated from Cnidium officinale and Ligusticum chuanxiong on the melanocyte-stimulating hormone (MSH), and provides MSH-inhibitory compositions and skin-whitening cosmetic compositions comprising the senkyunolide A. The compositions of the present invention show significantly enhanced skin-whitening effect owing to its efficient inhibition of MSH even in lower concentration.

Abstract: The present invention concerns stabilized cosmetic material containing triple-encapsulated retinal. Unstable, fat-soluble retinal 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 retinal (sphingosome) is inserted into lamellar liquid-crystal emulsifying base, thereby being triply encapsulated.