To provide a novel gel sheet mask.SOLUTION: A gel sheet mask (1) includes a sheet-like support layer (10), and a gel layer (20) that consists of a gel composition and that is applied to one surface (10a) of the support layer (10), where the gel sheet mask (1) further includes a metallic occlusive layer (30) that is applied to the other surface (10b) of the support layer (10), which is different from the surface (10a) of the support layer (10) to which the gel layer (20) is applied, so as to cover the other surface (10b) of the support layer (10).SELECTED DRAWING: Figure 2【課題】新規なゲルシートマスクを提供する。【解決手段】ゲルシートマスク(1)は、シート様支持層(10)と、ゲル組成物からなり、支持層(10)の一方の表面(10a)に設けられるゲル層(20)とを含み、ゲルシートマスク(1)が、ゲル層(20)が設けられる支持層(10)の表面(10a)とは異なる支持層(10)の他方の表面(10b)に、支持層(10)の他方の表面(10b)を覆うように設けられる金属閉塞層(30)をさらに含む。【選択図】図2
