PROBLEM TO BE SOLVED: To provide hydrogen supply materials that make it easy to take in enough hydrogen into the body to eliminate hydroxyl radicals in the body in daily life.SOLUTION: Provided is a hydrogen supply material 200 for bringing hydrogen into contact with skin and/or mucous membranes via a medium, comprising a silicon fine particles 100a with hydrogen generation ability or an aggregate thereof, an impermeable membrane 70 covering the layers comprising them, and a medium 90b containing at least one selected from the group consisting of potassium carbonate, sodium carbonate, sodium hydrogen carbonate, sodium hydroxide, and potassium hydroxide, in contact with the silicon fine particles or the aggregate thereof through the film, when removing at least a part of the film or dissolving at least a part of the film, the medium contacting the silicon fine particles or the aggregate.SELECTED DRAWING: Figure 3ACOPYRIGHT: (C)2020,JPO&INPIT【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１００ａ又はその凝集体と、それらを含む層を覆う不透水性の膜７０と、前記膜を介して前記シリコン微細粒子又はその凝集体に接する、炭酸カリウム、炭酸ナトリウム、炭酸水素ナトリウム、水酸化ナトリウム、及び水酸化カリウムの群から選択される少なくとも１種を含む媒体９０ｂとを備え、前記膜の少なくとも一部を除去したとき又は該膜の少なくとも一部が溶解したときに、前記媒体が該シリコン微細粒子又は前記凝集体に接する、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２００。【選択図】図３Ａ
