PROBLEM TO BE SOLVED: To provide a composition containing a novel ginsenoside having an excellent skin lightening effect. SOLUTION: A novel ginsenoside (20S, 24R) -6-O-β-D-glucopyranosyl (1 → 2) -β-D-glucopyranoside-dammal-3-one-20, which is a novel ginsenoside extracted from ginseng seeds. A composition comprising 2,24-epoxy-6a, 12b, 25-triol as an active ingredient. [Selection diagram] None【課題】優れた皮膚美白効能を有する新規なジンセノサイドを含む組成物の提供。【解決手段】高麗人参の種子から抽出した新規なジンセノサイドである（２０Ｓ，２４Ｒ）－６－Ｏ－β－Ｄ－グルコピラノシル（１→２）－β－Ｄ－グルコピラノシド－ダンマル－３－オン－２０,２４－エポキシ－６ａ，１２ｂ，２５－トリオールを有効成分として含む組成物。【選択図】なし
