The present invention relates to a composition for external application of skin, which comprises: (A) an active ingredient of grain zymogen obtained by grain fermentation, and (B) a thickener, and the above (B) thickener is selected from polyacrylic acid and Its derivative thickener or polysaccharide thickener, wherein the molecular side chain structure of the polyacrylic acid and its derivative thickener includes the structure of the following formula (1): -C(O)-OL-(R 1 O) n -R 2 ………(1) where R 1 is a straight or branched alkyl group with 2 to 6 carbon atoms, and R 2 is a straight or branched chain with 1 to 50 carbon atoms Chain alkyl, n represents an integer from 0 to 100, L is a single bond or a divalent linking group. The composition of the present invention has an obvious synergistic viscosity-increasing effect, which can achieve the desired viscosity through the use of grain fermented enzymes when reducing the use of thickeners.本發明係關於一種皮膚外用劑組合物，其包含：(A)穀物經過醱酵而得之穀物醱酵物有效成分、及(B)增稠劑，上述(B)增稠劑選自聚丙烯酸及其衍生物增稠劑或者多糖類增稠劑，其中，上述聚丙烯酸及其衍生物增稠劑之分子側鏈結構中包括如下式(1)結構：-C(O)-O-L-(R1O)n-R2………(1)其中，R1為碳原子數為2~6之直鏈或支鏈之伸烷基，R2為碳原子數為1~50之直鏈或支鏈之烷基，n表示0~100之整數，L為單鍵或者二價連接基。本發明組合物具有明顯之協同增黏效應，可於減少增稠劑之使用之情形時，藉由穀物醱酵物之使用而達到所需之黏度。
