The purpose of the present invention is to provide: a virus inactivating agent that exhibits an effect at an amount that does not cause skin irritation； and an external skin preparation composition containing said virus inactivating agent. The present invention relates to: a virus inactivating agent containing, as an effective component thereof, at least one selected from mint oil, eucalyptus oil, rosemary oil, sage oil, tea tree oil, shell ginger oil, peppermint oil, lemongrass oil, cajeputi oil, niaouli cineole oil, lime oil, lemon oil, lemon verbena oil, St. John's wort oil, ravintsara oil, rosewood oil, Melissa/lemon balm oil, myrrh oil, mandarin oil, vetiver oil, frankincense oil, citronella oil, cardamom oil, Angelica oil, and cationized starch； and an external skin preparation composition containing the same.本發明之目的在於提供一種以不產生皮膚刺激之程度之量發揮效果之病毒去活化劑、及含有該病毒去活化劑之皮膚外用劑組合物。本發明係關於一種含有選自薄荷油、桉樹油、迷迭香油、鼠尾草油、茶樹油、月桃油、胡椒薄荷油、檸檬草油、白千層油、桉油醇綠花白千層油、萊姆油、檸檬油、檸檬馬鞭草油、貫葉連翹油、香樟油、玫瑰木紫檀油、香蜂草/檸檬香蜂草油、沒藥油、橘油、香根草油、乳香油、香茅油、小豆蔻油、西洋當歸油、及陽離子化澱粉中之1種或2種以上作為有效成分之病毒去活化劑、及含有其之皮膚外用劑組合物。
