PROBLEM TO BE SOLVED: To obtain a silky skin feel after bathing by containing porous silicic anhydride, carbonate and organic acid, and to prevent the packaging material from swelling even when it is sealed and stored in the packaging material. To provide a bathing agent having excellent stability. The following components (A) to (D): (A) Porous silicic acid anhydride 1.5% by mass or more and 10% by mass or less (B) Carbonate (C) Organic acid (D) Amino acid-based surfactant is contained, and the component (D) with respect to the component (A) A bathing agent having a mass ratio [(D) / (A)] of 0.01 or more and 1 or less. [Selection diagram] None【課題】多孔性無水ケイ酸、炭酸塩及び有機酸を含有し、入浴後にさらさらとした肌感触が得られると共に、包材中に密封して保存した場合にも包材の膨れが起こり難く保存安定性に優れる浴用剤を提供する。【解決手段】下記成分（Ａ）～（Ｄ）：（Ａ）多孔性無水ケイ酸 １．５質量％以上１０質量％以下（Ｂ）炭酸塩（Ｃ）有機酸（Ｄ）アミノ酸系界面活性剤を含有し、成分（Ａ）に対する成分（Ｄ）の質量比［（Ｄ）／（Ａ）］が０．０１以上１以下である浴用剤。【選択図】なし
