PROBLEM TO BE SOLVED: To provide a functional material which is derived from a natural product excellent in biosafety, inhibits DNA damage, and can repair a damaged DNA.SOLUTION: The present invention provides a DNA damage inhibitor and a DNA damage repairing agent which comprise an extract of one or more of plants of Araliaceae Panax japonicus and plants of Poaceae Oryza, or a hydrolysate of the extract or a fermented product of the plants as well as a skin external composition or an oral composition containing such agents.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】生体安全性にすぐれた天然物由来のものであって、DNAの損傷を抑制し、かつ、損傷したDNAを修復することができる機能性素材の提供。【解決手段】ウコギ科トチバニンジン属の植物、又はイネ科イネ属の植物のいずれか1種以上の植物の抽出物又は当該抽出物の加水分解物、或いは当該植物の発酵物を含むDNA損傷抑制剤及びDNA損傷修復剤、並びに、それらの剤を含む皮膚外用組成物または経口用組成物。【選択図】なし
