As for this invention, the hydrocarbon which can (a) the ramification C6 - C26 fatty acid or (b) making use of the Kolbe electrolysis synthesis of the blend of the direct C3 - C26 fatty acid and the ramification saturation C4 - C26 fatty acid is included, the cosmetics and/or it regards the medical supply composition. The composition of this invention operates satisfactorily as a divination extent characteristic oil component.本発明は、(a)分枝C6~C26脂肪酸または(b)直鎖C3~C26脂肪酸および分枝飽和C4~C26脂肪酸の混合物のコルベ電解合成を利用して得られた炭化水素を含む、化粧品および/または医薬品組成物に関する。本発明の組成物は、易拡がり性油成分として良好に作用する。