The present invention provides a detergent which contains or blends (A) anionic surfactant and (B) an amino polyether-modified polysiloxane containing a polyoxyalkylene structure satisfying the following formula (I) And (C) organic acids, and the mass ratio of component (A) to component (B) [(A) / (B)] is less than 25, and the mass ratio of component (A) to component (C) [( A) / (C)] is 30 or more and 3000 or less. 0.01 ≦ Si / AO ≦ 1.6 (I) [In formula (I), Si represents the mole number of silicon atoms in component (B), and AO represents the average addition mole number of oxyalkylene groups in component (B)]本發明提供一種洗淨劑，其係含有或調配(A)陰離子性界面活性劑、(B)滿足下述式(I)之含有聚氧伸烷基結構之胺基聚醚改性聚矽氧、及(C)有機酸而成，且成分(A)與成分(B)之質量比[(A)/(B)]未達25，成分(A)與成分(C)之質量比[(A)/(C)]為30以上3000以下。0.01≦Si/AO≦1.6 (I)[式(I)中，Si表示成分(B)中之矽原子之莫耳數，AO表示成分(B)中之氧伸烷基平均加成莫耳數]
