To provide an oil-in-water emulsion cosmetic offering excellent salt tolerance, whereby a system in which a di-long chain cationic surfactant has been formulated can be easily produced irrespective of the method, such as high-pressure emulsification, and also translucency can kept stable in low-temperature and high-temperature ranges. A translucent oil-in-water emulsion cosmetic containing 0.01-1 mass% of a di-long chain cationic surfactant (A), 0.01-2 mass% of a non-ionic surfactant (B) having a sterol backbone with an HLB of 10-18, 0.01-1 mass% of an oil (C) that is liquid at room temperature, 0.1-10 mass% of a specific alkylene oxide derivative (D) (for example, POE(14) POP(7) dimethyl ether or the like), 0.1-20 mass% of a C1-3 monohydric lower alcohol (E), and water (F), [component (C)/component (A) + component (B)] = 0.60 or lower (mass ratio). The translucent oil-in-water emulsion cosmetic may also contain menthol and/or camphor.本發明係提供含有(A)0.01~1質量%之二長鏈型陽離子界面活性劑、(B)0.01~2質量%之HLB10~18之具有固醇骨架之非離子界面活性劑、(C)0.01~1質量%之常溫為液狀之油份、(D)0.1~10質量%之特定之伸烷基氧化物(Alkylene oxide)衍生物[例如POE(14)POP(7)二甲醚等]、(E)0.1~20質量%之C1-3之一元低級醇、及(F)水,[(C)成份/(A)成份+(B)成份]=0.60以下(質量比)之透明的水中油型乳化化妝料。進而,可再含有薄荷醇及/或樟腦。藉由本發明提供將摻混二長鏈型陽離子界面活性劑之系統,於低溫~高溫區域可安定地維持透明性,而且不藉由高壓乳化等之方法而可簡便地製造之耐鹽性佳之水中油型乳化化妝料。
