COSRX 6 Peptide Skin Booster Serum and Snail Mucin have replaced everything I used for skincare, except my tretinoin, sunscreen, and moisturizer 🙌🏼 It has Hyaluronic Acid, Amino Acids, Niacinamide, copper Peptides, supports your skin barrier. #skinserum #cosrx #cosrxsnailmucin #cosrxpeptide #bestskincareproducts #bestskincare #agingskin #agingskincare #midlifewomen #skinbarrierrepair