PROBLEM TO BE SOLVED: To provide a foamable skin external preparation capable of satisfying all the two effects of the increase in a skin blood flow and the rise in a corneum moisture content on a high order.SOLUTION: A foamable skin external preparation being a two agent type is composed of a viscous composition and acid granules, and the viscous composition and the acid granules are mixed upon use. The viscous composition at least includes a carbonate, a pine bark extract, an ice plant extract and a soybean ceramide extract, and the acid granules at least include an acid substance reacted with the carbonate and producing foaming.COPYRIGHT: (C)2014,JPO&INPIT【課題】皮膚血流量の増加及び角層水分量の上昇という2つの効果を高次で両立できる発泡性皮膚外用剤の提供。【解決手段】本発明の発泡性皮膚外用剤は、粘性組成物と酸性顆粒とからなり、該粘性組成物と該酸性顆粒とを使用時に混合する2剤型の発泡性皮膚外用剤であって、前記粘性組成物が、炭酸塩、松樹皮抽出物、アイスプラント抽出物、及び大豆セラミド抽出物を少なくとも含有し、前記酸性顆粒が、前記炭酸塩と反応して発泡を生じさせる酸性物質を少なくとも含有する。【選択図】なし