PROBLEM TO BE SOLVED: To provide a skin external preparation which contains rhododendrol or derivatives thereof and has good stability and excellent skin permeability.SOLUTION: A skin external preparation contains the following components (A) and (B): (A) rhododendrol or a derivative thereof represented by the specified general formula (1) (in the formula, R1 represents a hydrogen atom, a C2-C20 acyl group, or a group selected from residues of monosaccharides and disaccharides) and (B) a nonanoic acid ester represented by the general formula (2) defined by C8H17C(O)OR2 (in the formula, R2 represents a C4-C18 chain or branched-chain, saturated or unsaturated hydrocarbon group).COPYRIGHT: (C)2014,JPO&INPIT【課題】ロドデンドロール又はその誘導体を含有し、安定性が良好で、皮膚透過性に優れる皮膚外用剤。【解決手段】下記成分(A)及び(B)を含有する皮膚外用剤。(A)下記一般式(1)で示されるロドデンドロール又はその誘導体(式中R1は、水素原子、炭素数2~20のアシル基、又は単糖類及び二糖類の残基から選ばれる基を示す。)(B)下記一般式(2)で示されるノナン酸エステルC8H17C(O)OR2 (2)(式中R2は、炭素数4~18の直鎖又は分岐鎖状の、飽和又は不飽和の炭化水素基を示す。)【選択図】なし
