Task Provided is a skin pressure sensitive adhesive sheet which has good adhesion to the skin surface, is hard to dry even after long use, can maintain flexibility, and has little change in shape.SOLUTION:A skin adhesive sheet comprising a copolymer containing the following components A and C as a polymerization component and having a water content of less than 10% by mass.Component A: Polysiloxane macromonomer having a plurality of polymerizable functional groups per molecule and having a number average molecular weight of 6000 or moreComponent C: a polymerizable monomer having an alkyl group and not having a fluoroalkyl groupSelection drawing None【課題】 皮膚表面との粘着性が良好で、長時間使用しても乾燥し難く、柔軟性を保つことができ、かつ形状の変化が少ない皮膚粘着シートを提供する。【解決手段】下記成分A及び成分Cを重合成分として含有する共重合体からなる含水率が10質量%未満の皮膚粘着シート。成分A:1分子あたり複数の重合性官能基を有し、数平均分子量が6000以上のポリシロキサンマクロモノマー成分C:アルキル基を有し、フルオロアルキル基を有しない重合性モノマー【選択図】なし
