Collection: Celimax Dual Barrier

The name is the whole idea: Aquatide, a peptide, works on the water barrier inside the skin, while five ceramides — NP, NS, AS, AP and EOP — hold the barrier from the outside so moisture does not escape. Celimax states that it uses ceramides of natural origin rather than synthetic ones, on the grounds that they sit closer to skin in structure and absorb better. The brand cites 21 months of development and interviews with 174 people with sensitive skin.