The present invention provides a method for preventing tangling of hair or fibers, which comprises a step of bringing the hair or fibers into contact with a treatment agent containing or blending the following components (A) and (B). (A) A polyoxyalkylene group-containing amine polyether-modified polysiloxane containing the following formula (I): 0.005 mass% or more and 5 mass% or less 0.01 ≦ Si / AO ≦ 1.6 (I) [In formula (I), Si represents the mole number of the silicon atom in the component (A), and AO represents the average addition mole number of the oxyalkylene group in the component (A)] (B) Aqueous medium本發明提供一種毛髮或纖維之纏結防止方法，其具有使毛髮或纖維與含有或調配如下成分(A)及成分(B)而成之處理劑接觸之步驟。(A)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0.005質量%以上5質量%以下0.01≦Si/AO≦1.6 (I)[式(I)中，Si表示成分(A)中之矽原子之莫耳數，AO表示成分(A)中之氧伸烷基平均加成莫耳數](B)水性介質
