This invention has an object to provide a method for improving the solubility of a sparingly water-soluble component in water, the method being applicable to cosmetic products such as water-based cosmetic products. To achieve this purpose, this invention provides a method for improving the solubility of a sparingly water-soluble component, the method including blending a compound represented by general formula (1) below with the sparingly water-soluble component in the presence of water. (In formula (1), R1 denotes a group represented by general formula (2) or a hydrocarbon group having 2 or 3 carbon atoms.) (In formula (2), R2 denotes an alkylene group having 1 to 3 carbon atoms, and n represents a number that is 0 or 1.)
本发明的目的是提供一种提高难溶于
水成分在
水中溶解度的方法,该方法适用于化妆品,如
水基化妆品。为实现这一目的,本发明提供了一种提高难溶于
水成分溶解性的方法,该方法包括在有
水的情况下,将下式(1)代表的化合物与难溶于
水成分混合。式(1)中,R1 表示通式(2)所代表的基团或具有 2 或 3 个碳原子的烃基)。式(2)中,R2 表示具有 1 至 3 个碳原子的亚烷基,n 表示 0 或 1 的数字)。