PROBLEM TO BE SOLVED: To provide an oil-based cosmetic preparation which retains a smooth feel.SOLUTION: There is provided an oil-based cosmetic preparation containing the following components (A), (B), and (C): (A) a substituted cellulose derivative having a cellulose skeleton in a main chain, in which 67 mol% or more in total hydroxy groups are substituted with a group -O-M-R (wherein M is CH2 or carbonyl C=O and R is 3-40C linear or branched alkyl or alkenyl), (B) an ester oil which is liquid at 25°C, and (C) a hydrocarbon oil which is liquid at 25°C, wherein the mass ratio (B)/(C) of component (B) to component (C) is 8/1 to 1/4.COPYRIGHT: (C)2010,JPO&INPIT【課題】滑らかな感触が持続する油性化粧料を提供する。【解決手段】次の成分(A)、(B)及び(C):(A)主鎖にセルロース骨格を有し、全水酸基の67mol%以上が基-O-M-R(MはCH2又はカルボニル基C=Oを示し、Rは炭素数3~40の直鎖又は分岐鎖のアルキル基又はアルケニル基を示す)で置換されているセルロース誘導体、(B)25℃で液状のエステル油、(C)25℃で液状の炭化水素油を含有し、成分(B)及び(C)の質量割合が、(B)/(C)=8/1~1/4である油性化粧料。【選択図】なし
