Brand from Japan: DR Lala Grant. Acetylglucosamine, an ingredient found in the skin that declines with age, is low molecular weight and highly concentrate to moisturizes your skin, prevent roughness, and maintain elasticity and luster. Moisture penetrates quickly and comfortably into the stratum corneum.No preservatives are added.How to use:After washing face, take one or half of the product in your hand and gently hand-push it over your face.If you use half the amount, use the rest on the same day of opening.Special care: Use 2 units consecutively per application.