PROBLEM TO BE SOLVED: To provide a foam-type external skin preparation exhibiting an amount/retention of carbon dioxide gas foam appealing to the eye of a user, as well as good usability such as prevention of the sagging of the preparation from skin.SOLUTION: A pack cosmetic used for face includes a hydrophobic modification alkylcellulose that surely contains a group: -CH2CH(OH)CH2OCjH2j+1 (wherein j denotes the integer of 6-26), as an essential ingredient, wherein an A agent including at least one salt chosen from the group consisting of carbonate and bicarbonates, and a B agent including a water soluble acid are separated, and are mixed at the use.COPYRIGHT: (C)2013,JPO&INPIT【課題】使用者の視覚に訴える炭酸ガスの発泡量・保持力と、肌からの垂れ防止等の使用性の良さを両立した発泡型皮膚外用剤の提供。【解決手段】基:-CH2CH(OH)CH2OCjH2j+1[jは6~26の整数を示す。]を必ず含む疎水化変性アルキルセルロースを必須成分とし、炭酸塩及び重炭酸塩からなる群から選ばれる少なくとも1種の塩を含むA剤と、水溶性酸を含むB剤が分離されており、使用時に混合される、顔面に使用するパック化粧料。【選択図】なし
