PROBLEM TO BE SOLVED: To provide a novel photoaging inhibitor using a urolithin having photoaging inhibitory effect.SOLUTION: A photoaging inhibitor comprises urolithins represented by general formula (1) (where R1, R2, R3, R4, R5, and R6 each represent a hydroxy group, a hydrogen atom or a methoxy group, and at least one of R1, R2, R3, R4, R5, and R6 is a hydroxy group).SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】光老化抑制効果を有するウロリチン類を用いた新規な光老化抑制剤の提供。【解決手段】下記一般式(1)で表されるウロリチン類を含有する光老化抑制剤。(式中、R1、R2、R3、R4、R5、及びR6は、それぞれ、水酸基、水素原子又はメトキシ基を表し、且つ、R1、R2、R3、R4、R5、及びR6のうち1つ以上は水酸基である。)【選択図】図1
