An object of the present invention is to provide means for enhancing ability to solubilize a low water-soluble substance or to disperse the substance in water. The present invention provides a water-containing composition containing water； at least one polyoxyethylene-polyoxypropylene-added phytosterol or phytostanol represented by the following formula (1): [F1] [wherein R represents a phytosterol residue or a phytostanol residue； m is a number from 5 to 100； and n is a number from 5 to 100]； and at least one low water-soluble substance which is in a dissolved state.本發明以對於針對難溶於水之物質之可溶化能、進而水中分散能提供更加優異之方法為目的，而提供一種含水組合物，其含有水、以及1種或2種以上之以下述式(1)表示之聚氧乙烯-聚氧丙烯加成植物固醇或植物固烷醇：[化1][式中，R表示植物固醇殘基或植物固烷醇殘基，m表示5~100之數，n表示5~100之數]。並且，以溶解之狀態含有1種或2種以上之水難溶性物質。
