PROBLEM TO BE SOLVED: To provide a diester having both hydrophilic and lipophilic functions, exhibiting smooth and moist feeling free from stickiness, good in compatibility with the skin, blendable with a cosmetic or skin care external preparation comprising water as a medium, and high in safeness and stability to provide an oily agent containing the diester, used for the cosmetic or skin care external preparation and to provide the cosmetic or skin care external preparation containing the diester, which exhibits smooth and moist feeling free from stickiness and is good in compatibility with the skin and excellent in safeness and stability.SOLUTION: The diester of a cyclohexane dicarboxylic acid with a polyoxyethylene monoalkyl ether expressed by the formula, is provided (in the formula, R is a linear, blanched or cyclic 1-12C hydrocarbon group and n is an integer of 2-11).COPYRIGHT: (C)2008,JPO&INPIT【課題】親水性、親油性の両方の機能を持ち、感触的にも滑らかで、しっとりしてべたつき感もなく、肌へのなじみが良好であり、水を媒体とする化粧料又は皮膚外用剤にも配合でき、かつ、安全性、安定性の高いジエステル、及び、ジエステルを含有する化粧料又は皮膚外用剤用油剤、並びに、感触的にも滑らかで、しっとりしてべたつき感もなく、肌へのなじみが良好であり、かつ、安全性、安定性に優れたジエステルを含有する化粧料又は皮膚外用剤の提供。【解決手段】シクロヘキサンジカルボン酸と一般式(1)で表されるポリオキシエチレンモノアルキルエーテルとのジエステルを用いる。【化1】(1)(式中、Rは炭素数1~12の直鎖、分岐鎖若しくは環状の炭化水素基であり、nは2~11の整数を表す)【選択図】なし
