PROBLEM TO BE SOLVED: To provide a functional material which can be compounded into cosmetics, quasi drugs, and food and drinks, is excellent in biosafety, and has excellent antioxidant ability.SOLUTION: The invention provides an antioxidant containing as an active ingredient a fermented product obtained by the fermentation of rice with lactic acid bacteria. The invention also provides skin cosmetics which contains the antioxidant, and prevent and improve rough and dry skin, acne, and skin aging, or hair cosmetics which improve the health of the scalp, suppress dandruff and itch, and has hair loss-preventing effect and hair growth-promoting effect.SELECTED DRAWING: None【課題】化粧料、医薬部外品及び飲食品に配合可能なものであって、生体安全性にすぐれ、且つ、すぐれた抗酸化能を有する機能性素材の提供。【解決手段】米を乳酸菌で発酵させて得られる発酵物を有効成分として含む抗酸化剤。さらに、この抗酸化剤を配合してなる肌荒れ、ニキビ及び皮膚老化を予防、改善する皮膚化粧料、又は頭皮を健全化し、フケ、痒みを抑制し、並びに脱毛予防及び発毛促進効果を有する毛髪化粧料。【選択図】なし