[PROBLEMS] To provide a hydrogen supply material, a method for producing the hydrogen supply material, and a hydrogen supply method for easily taking in a sufficient amount of hydrogen into the body in a daily life to eliminate hydroxyl radicals in the body. The method includes the steps of: providing silicon fine particles or an aggregate thereof capable of generating hydrogen； and a physiologically acceptable medium in contact with the silicon fine particles or the aggregate. Hydrogen supply material for contacting the skin and / or mucous membrane. [Selection diagram] Fig. 1【課題】生活場面において、体内のヒドロキシルラジカルを消滅するために十分な量の水素をその体内に取り込み易くする水素供給材及びその製造方法、並びに水素供給方法の提供。【解決手段】水素の発生能を有するシリコン微細粒子又はその凝集体と、生理学的に許容可能な、該シリコン微細粒子又は前記凝集体に接する媒体と、を備える、前記媒体を経由して前記水素を皮膚及び／又は粘膜に接触させるための、水素供給材。【選択図】図１
