Providing cosmetics, pharmaceutical compositions, and foods that are highly effective in improving skin quality, using materials derived from natural products. Provided are cosmetic compositions, pharmaceutical compositions and foods for improving skin quality, comprising as an active ingredient a cassis fruit, in particular a polysaccharide contained in cassis juice, which has been partially degraded by enzyme treatment.天然物由来の素材を原料とする、肌質改善効果の高い化粧品、医薬組成物、食品の提供。カシス果実、特に酵素処理により限定的に部分分解した、カシス果汁に含まれる多糖類を有効成分として含んでなる、肌質改善用の化粧品組成物、医薬組成物および食品を提供する。
