The present invention can prevent the dripping from the skin, the carbon dioxide can be moderately foaming and retained, and provides an easy foam type external skin preparation was peeled off after coating. A water and a xyloglucan and the A agent containing a carbonate salt, a polyhydric alcohol, foam type external skin treatment composition composed of a B agent containing a water-soluble polymer and a water-soluble acid, the A agent and B agents and foaming type skin external preparation is intended to be mixed at the time of use. [Selection Figure] None【課題】肌からの垂れを防止でき、炭酸ガスを適度に発泡及び保持でき、塗布後に剥がし易い発泡型皮膚外用剤を提供する。【解決手段】水、キシログルカン及び炭酸塩等を含むA剤と、多価アルコール、水溶性高分子及び水溶性酸を含むB剤とから構成される発泡型皮膚外用剤であって、該A剤とB剤とが使用時に混合されるものである発泡型皮膚外用剤。【選択図】なし
