PROBLEM TO BE SOLVED: To provide an effervescent bath agent of a compression-molding type, the agent allowing sebum stains to be removed from the surface of the skin by just bathing.SOLUTION: The present invention provides an effervescent bath agent of a compression-molding type, the bath agent comprising the following components (A) to (C): (A) 30 to 70% by weight of carbonate containing sodium carbonate (a1)； (B) 15 to 60% by weight of succinic acid； and (C) 0.5 to 3.0% by weight of polyethylene glycol. Here, the bath agent comprises: component (a1), sodium carbonate, in amount of 5 to 13% by weight based on the total amount of the bath agent； and carbon dioxide-generating components, component (A) and component (B), in amount of 60% by weight or greater based on the total amount of the bath agent.SELECTED DRAWING: None【課題】入浴するだけで、皮膚表面の皮脂汚れを除去することができる発泡性圧縮成形型入浴剤の提供。【解決手段】次の成分（Ａ）～（Ｃ）：（Ａ）炭酸ナトリウム（ａ１）を含む炭酸塩 ３０～７０重量％（Ｂ）コハク酸 １５～６０重量％（Ｃ）ポリエチレングリコール ０．５～３．０重量％を含有する発泡性圧縮成形型入浴剤であって、成分（ａ１）炭酸ナトリウムを入浴剤全量に対して５～１３重量％を含有し、かつ、成分（Ａ）および成分（Ｂ）の炭酸ガス発生成分を、入浴剤全量に対して６０重量％以上含有することを特徴とする発泡性圧縮成形型入浴剤。【選択図】なし
