The purpose of the present invention is to provide a composition for enhancing the solubility in water or water dispersibility of a poorly soluble or insoluble substance having a π-conjugated system. By allowing carotenoid glycosides and/or crocetin to coexist with a poorly water-soluble or water-insoluble substance having a π-conjugated system, the solubility in water or water dispersibility of the poorly water-soluble or water-insoluble substance having a π-conjugated system can be greatly increased.本発明の目的は、π共役系の難溶性又は不溶性物質の水への可溶化能又は水分散性を向上させる組成物を提供することである。 π共役系の水難溶性又は水不溶性物質と共にカロテノイド配糖体及び／又はクロセチンを共存させることにより、π共役系の水難溶性又は水不溶性物質の水への可溶化能又は水分散性が格段に向上し得る。
