Cristalhyal is a high molecular weight sodium hyaluronate (MW: 1-1.4 MDa) obtained through a fermentation process. Naturally found in the deep skin layers, Hyaluronic Acid (HA) is a non irritating and non sensitizing agent also called “molecular sponge” due to its high hygroscopic properties. As a pure HA powder, Cristalhyal is one of the most effective moisturizers.