PROBLEM TO BE SOLVED: To provide a bath agent composition that can generate fine bubbles on a bath water surface, dramatically improve the persistence of these bubbles, and can give the skin an excellent feeling of bubbles.SOLUTION: A bath agent composition contains the following components (A), (B), (C) and (D): (A) an organic acid, (B) a carbonate, (C) a nonionic surfactant, and (D) an alcohol having 6 or more carbon atoms, wherein an average HLB of the whole component (C) is at least 11, and a mass ratio of the component (C) to the component (D), (C)/(D), is 1 or more and 250 or less.COPYRIGHT: (C)2016,JPO&INPIT