< Topic >It is easy to blend when mixing uniformly, carbon dioxide without nonuniformity it is generated, offer of the kit which can obtain the foaming Characteristic skin external use medicine of fixed quality with the quality of the water to which time of measurable variable of the user is not required, in addition uses.SolutionsBeing the kit in order to obtain the foaming Characteristic skin external use medicine, the first medicine reacting with the acidic material and the aforementioned acidic material, the kit which is the carbon dioxide generation material which generates carbon dioxide, and the constituent which contains the thickener, the second medicine the water and/or is the constituent which contains the moisturizer.< Choice figure >It is not【課題】混合時に均一に混ざりやすく、炭酸ガスがムラなく発生し、使用者の計量の手間がかからず、また使用する水の品質によらず、一定品質の発泡性皮膚外用剤を得ることのできるキットの提供。【解決手段】発泡性皮膚外用剤を得るためのキットであって、第一剤が酸性物質、前記酸性物質と反応して炭酸ガスを発生する炭酸ガス発生物質、及び増粘剤を含有する組成物であり、第二剤が水及び/又は保湿剤を含有する組成物であるキット。【選択図】なし