A mask for skin care includes a fiber substrate, wherein the fiber substrate is woven or nonwoven, and includes modified fibers, and the modified fibers are cellulose fibers with at least one hydrophilic functional group grafted on. The grafted ratio of the modified fibers is in the range from 5% to 30%, and the modified fibers can effectively improve the moisture absorption and the moisture-retaining capacity of the mask for skin care.