Concentrated serum for facial care with ingredients that help restore the barrier function by balancing the hydro-lipid layer of the skin. Restorative Serum. With Ceramide NP (Ceramide 3), Niacinamide and Hyaluronic Acid Balances the skin's hydro-lipid layer and improves the barrier function, helping to retain water. For all skin types, especially dry and undernourished skin.