PROBLEM TO BE SOLVED: To provide a hyperoxidation inhibitor for lipid and a cosmetic for scalp and hair which stably and effectively inhibit hyperoxidation of lipid derived from scalp and/or hair which could cause dandruff, itch, and odor.SOLUTION: A hyperoxidation inhibitor for lipid derived from scalp and/or hair has 6-benzylaminopurine as an active ingredient, and a cosmetic for scalp and hair uses the hyperoxidation inhibitor for lipid.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】フケ、かゆみ、臭気の原因となる頭皮及び/又は毛髪由来の脂質の過酸化を安定かつ有効に抑制する脂質用過酸化抑制剤及び頭皮毛髪用化粧料を提供する。【解決手段】6-ベンジルアミノプリンを有効成分とする頭皮及び/又は毛髪由来の脂質用過酸化抑制剤、及び、かかる脂質用過酸化抑制剤を使用してなる頭皮毛髪用化粧料。【選択図】 なし