Amorepacific Corporation

Pacific Corporation

Ok Sub Lee

Duck Hee Kim

Ho Sik Rho

Ih Seop Chang

Hak Hee Kang

Jae Won You

Jin Woong Kim

Jong Ho Park

Sang Hoon Han

Heung Soo Baek

Hae Kwang Lee

Han Kon Kim

Kil Joong Kim

Su Nam Kim

Jong Eon Hong

Chang Man Park

Hee Kyung Ju

Jeong A Lee

Su Sun An

Young Hun Byon

Bo Sub Lee

Duck Hoo Kim

Ih Soop Chang

Eui Dong Son

Bae Hwan Kim

Jae Suk Ko

Yun Ki Cho

Ho Sik Roh

The present invention relates to a sesamol derivative or its salt, and a skin external composition containing the same. More particularly, the invention relates to a sesamol derivative or its salt, which consists of sesamol and 3-aminopropane phosphoric acid, linked with each other by a phosphoric acid diester bond, and can be degraded into sesamol and 3-aminopropane phosphoric acid by enzymes present on the skin so as to simultaneously show the physiological activities of sesamol and 3-aminopropane phosphoric acid, as well as a preparation method thereof and a skin external composition containing the same.

Sesamol derivatives or their salts, the process for preparing the same, and the skin external composition containing the same

The present invention provides hydroxamic acid derivatives represented by the formula, having antioxidation, collagen biosynthesis promotion and skin pore contraction effects, and a method for preparation thereof. Further, the present invention provides skin-care external compositions for preventing skin aging, containing said hydroxamic acid derivatives represented by the formula as an active ingredient.

Hydroxamic acid derivatives and the preparation method thereof

There are provided thermotropic liquid crystal polymer microcapsules which can show behavior of liquid crystal as it is within polymer phase due to phase separation between liquid crystal and polymer, so to be incorporated into cosmetic composition as an additive for visual effect, and in loading active ingredients within liquid crystal, can improve the stability of the active ingredients in cosmetic base; and a method for preparing the same; and cosmetic compositions containing the same.

Thermotropic liquid crystal polymer microcapsules, a method for preparing the same, and cosmetic compositions containing the same

The present invention provides hydroxy pyranone derivatives and a method for preparing the hydroxy pyranone derivatives. The hydroxy pyranone derivatives of the present invention are significantly effective in promoting the biosynthesis of collagen and in inhibiting the activity of collagenase, i.e. an enzyme for decomposing collagen, to have anti-wrinkle efficacy, and can be incorporated into medicines or external applications for lessening skin-wrinkles.

Hydroxy pyranone derivative and preparation method thereof

A ceramide-like compound having properties of the natural ceramides are represented by the following formula (I), and a method for producing the same , and a cosmetic composition containing the same as an active ingredient:

Ceramide-like compounds having antioxidant property and a method for preparation thereof, and a cosmetic composition containing the same

Disclosed herein is a method for preparing 3-aminopropane phosphoric acid represented by the formula (I), comprising the steps of (a) reacting 3-amino-1-propanoi with phosphorus oxychloride at a low temperature, and (b) hydrolyzing the product of the step (a) in the presence of an acidic catalyst, and a cosmetic composition containing 3-aminopropanic phosphoric acid or its salts as an active ingredient. ##STR1##

Method for preparing 3-aminopropane phosphoric acid

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Anyang-shi, South Korea

Ok Sub Lee