Nanocellulose due to its special properties, such as high wetness (water content 95%), high purity, and mechanical stability, finds applications in the cosmetics as a moistening mask, as well as an ingredient of moistening cream. For instance, two cosmetic tissue products are successful on the market: a series of masks based on BioCellulose and the mask basis material NanoMasque®. Both tissues are produced from pure bacterial cellulose and alternatively impregnated with active substances applied in cosmetics such as plant extracts, extracts from algae, essential oils, and panthenol. The additives are bound inside the cellulose matrix, e.g., by hydrogen bonds. These bonds are selective enough to localize the substances in the matrix as well as to allow their migration into the skin during application (Fig. 21.21).