To provide a composition for an oil-in-water type cosmetic which improves the tension and elasticity of skin, improves wrinkles and flabbiness of skin, has a good feeling of use without stickiness and suppresses creaming with time and to provide a sheet-type cosmetic which suppresses segregation with time in a state of being impregnated in a nonwoven fabric.SOLUTION: There is provided a composition for an oil-in-water type cosmetic which comprises the following components (A) to (D), wherein the content mass ratio {(B)+(C)}/(D) of the component (B) and the component (C) to the component (D) is 1/10 to 10. (A) 1 to 10 mass% of nicotinamide, (B) a polyoxyethylene addition type castor oil, (C) a polyoxyethylene addition type sorbitol fatty acid ester and (D) a liquid oil agent.SELECTED DRAWING: Figure 1【課題】肌のハリ・弾力を向上させ、シワ・たるみを改善すると共に、べたつきがないといった良好な使用感触を有し、経時でのクリーミングが抑制された水中油型化粧料用組成物、ならびに、不織布含浸状態での経時での分離が抑制されたシート状化粧料の提供。【解決手段】次の成分(A)~(D)を含有し、成分(B)および成分(C)と成分(D)の含有質量割合:{(B)+(C)}/(D)が1/10~10である水中油型化粧料用組成物。(A)ニコチン酸アミド:1~10質量%(B)ポリオキシエチレン付加型ヒマシ油(C)ポリオキシエチレン付加型ソルビット脂肪酸エステル(D)液状油剤【選択図】図1