Skin external preparation

[PROBLEMS] To provide a skin external preparation which is capable of sustainedly releasing a fat-soluble drug (retinol, tocopherol acetate, etc.) while controlling the initial penetration speed and thereof and, therefore, shows reduced skin irritation, a refreshing texture, a high safety and a high...

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Bibliographic Details
Main Authors TAKEOKA, ERIKO, KUSABA, KENTARO, TESHIGAWARA, TAKASHI, MATSUO, AKIRA, TAMURA, JUNKO
Format Patent
LanguageEnglish
Published 29.01.2015
Subjects
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS
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Summary:[PROBLEMS] To provide a skin external preparation which is capable of sustainedly releasing a fat-soluble drug (retinol, tocopherol acetate, etc.) while controlling the initial penetration speed and thereof and, therefore, shows reduced skin irritation, a refreshing texture, a high safety and a high stability. [MEANS FOR SOLVING PROBLEMS] A skin external preparation containing a fat-soluble drug-containing wax microdispersion composition, wherein the fat-soluble drug-containing wax microdispersion composition comprises a solid or semisolid wax, a nonionic surfactant, an aqueous dispersion medium and a fat-soluble drug, the ratio by mass ofthe nonionic surfactant/the wax is 1.0 or more, and the wax containing the fat-soluble drug enclosed therein is finely dispersed in a solid or semisolid state in the aqueous dispersion medium.
Bibliography:Application Number: AU20080332297