Problem to be solved: to provide a light storing material which is safe against the human body and has good light storage property and can be used for cosmetic applications.Light source material represented by equation (1). Manufacturing method thereof. A cosmetic material containing the light storing material. Na2mg1-xsio4: xmn2 + (1) (x is 0.005 to 0.2)Diagram【課題】人体に対して安全であって、かつ、良好な蓄光性を有し、化粧料用途に使用できる蓄光材料を提供する。【解決手段】式(1)で表される蓄光材料。その製造方法。当該蓄光材料を含んでなる化粧料。Na2Mg1-xSiO4:xMn2+(1)(xは0.005~0.2の数)【選択図】図1