To provide a DNA repair promoter； particularly, a DNA repair promoter having the action of promoting the repair of DNA damage caused by the action of ultraviolet rays, and an external composition for protection against sunburn or ultraviolet rays, containing the DNA repair promoter.SOLUTION: A DNA repair promoter contains a processed product of a Lindera plant. There is also provided an external composition for protection against sunburn or ultraviolet rays, containing the DNA repair promoter. The processed plant product is, preferably, a processed product of a plant branch.SELECTED DRAWING: None【課題】ＤＮＡ修復促進剤、特に紫外線の作用に起因して生じるＤＮＡ損傷の修復促進作用を有するＤＮＡ修復促進剤、及び前記ＤＮＡ修復促進剤を含有する日焼け用又は紫外線防御用の外用組成物の提供。【解決手段】クロモジ(Lindera)属に属する植物の加工物を含有するＤＮＡ修復促進剤。前記ＤＮＡ修復促進剤を含有する日焼け用又は紫外線防御用の外用組成物。前記植物の加工物は植物の枝の加工物であることが好ましい。【選択図】なし
