Round Lab Birch juice moisturizing serum 50mlA light, volatile serum to give you skin the silky look without the greasy feel. Its lightweight, watery and somewhat oily texture quickly penetrates through skin but leaves no oily residue or build up. <3 Step Moisturizing Care> Opens moisture pathyway: Glyceryl Glucoside promotes production of Aquaporins, opening up skin's moisture pathway. Moisturizing Hydration: Birch Sap effectively boosts moisture retention. Moisture lock: Vita Hyaluronic Acid