PROBLEM TO BE SOLVED: To provide a skin antiseptic composition having an excellent effect of suppressing the production of a biofilm derived from a microorganism and having a short drying time when applied or sprayed on the skin such as fingers, and to apply or spray the same onto the skin. To provide a method of disinfecting the skin surface by drying. SOLUTION: (A1) a compound represented by the following general formula (a1) (hereinafter referred to as component (A1)), (A2) a compound represented by the following general formula (a2) (hereinafter referred to as component (A2)) ), (B) containing 25% by mass or more and 85% by mass or less of a monohydric alcohol having 2 or more and 3 or less carbon atoms, and the total content of the (A1) component and the (A2) component is 0.001% by mass or more and 5.0 A skin antiseptic composition, which is not more than mass% and the mass ratio (A2)/(A1) of the content of the component (A1) and the content of the component (A2) is 0.4 or more and 75 or less. R1a-O-(EO)nH (a1) (In the formula, R1a represents a hydrocarbon group having 8 to 18 carbon atoms, EO represents an ethyleneoxy group, and n represents an integer of 4 or more.) R2a-O-(EO)m-H(a2) (In the formula, R2a represents a hydrocarbon group having 8 to 18 carbon atoms, EO represents an ethyleneoxy group, and m represents an integer of 1 to 3. ) [Selection diagram] None【課題】微生物由来のバイオフィルムの産生を抑制する効果に優れ、且つ手指等の皮膚に塗布又は噴霧した際の乾燥に要する時間が短い、皮膚消毒剤組成物、及びそれを皮膚に塗布又は噴霧して乾燥させて皮膚表面を消毒する方法の提供。【解決手段】（Ａ１）下記一般式（ａ１）で表される化合物（以下、（Ａ１）成分という）、（Ａ２）下記一般式（ａ２）で表される化合物（以下、（Ａ２）成分という）、（Ｂ）炭素数２以上３以下の１価アルコールを２５質量％以上８５質量％以下含有し、（Ａ１）成分と（Ａ２）成分の合計含有量が０．００１質量％以上５．０質量％以下であり、（Ａ１）成分の含有量と（Ａ２）成分の含有量との質量比（Ａ２）／（Ａ１）が、０．４以上７５以下である、皮膚消毒剤組成物。 Ｒ１ａ－Ｏ－（ＥＯ）ｎ－Ｈ （ａ１）（式中、Ｒ１ａは炭素数８以上１８以下の炭化水素基を示し、ＥＯはエチレンオキシ基を示し、ｎは４以上の整数を示す。） Ｒ２ａ－Ｏ－（ＥＯ）ｍ－Ｈ （ａ２）（式中、Ｒ２ａは炭素数８以上１８以下の炭化水素基を示し、ＥＯはエチレンオキシ基を示し、ｍは１～３の整数を示す。）【選択図】なし
