To achieve plump and hydrated skin, the solution x3 = Hyaluronic Acid, Ceramides and Skin compatible Vitamin C. We cannot combine these products effectively into 1 serum as they will have a chemical reaction in the bottle. We have however taken this to x2 steps with our C Serum followed by our HA Gold Serum. Skin compatible Vitamin C and a lot of extra goodies to protect and enhance your complexion followed with HA Gold triple ceramide complex and correct molecular weight HA