What is natural cellulose(cuprammonium)?It is a staple long extracted from cottonseed etc. It is very skin-friendly. It has excellent water content and sustaining power. It also has excellent rehydration function. It is a good material for essence mask with close adhesion. When it is adhered to the face, is conveys efficacious ingredients effectively with no loosening. It has the feature to put moisture out, so you will feel comfortable.Raw material of cuprammonium®: Cotton lintRaw material is composed of 100%of cotton. Raw material of cuprammonium natural fiber, cotton. Cotton is extracted from "lint", which is used for clothes, "seed", which is material of oil, and "linter" surrounding seed. Only good quality "linter" is used to make cuprammonium.DirectionsApply your usual toner after washing your face -> Spread the mask sheet on your face -> Leave if for 15-20 minutes then remove the sheet -> Softly massage your face to make the remaining ingredients absorb entirely.Ingredients Blue berry extract: 5%, Purified water, blue berry extract, glycerin, butylene glycol, aloe vera leaf extract, purslane extract, polysorbate80, carbomer, triethanolamine, betaine, methylparaben, allantoin, witch hazel water, sodium hyaluronate, sodium PCA, caprylic/Capric Triglyceride, disodium EDTA, dipotassium glycyrrhizate, natto gum, hydrolyzed elastin, sodium polyarylate, tocopheryl acetate , perfume, propylparben