Since its creation, Institut Esthederm has seen the skin as an ecosystem that's constantly interacting with its environment, and whose natural mechanisms must be respected in order to preserve its health and beauty in the long term. The brand offers a wide range of products tailored to all skin types. One of their must-haves? The Fundamental Serum from the Cellular Concentrate range. This universal, complete rebalancing and skin-perfecting serum corrects and rebalances essential cellular functions. The end result: the skin appears smoother, the skin texture more refined and the complexion fresher.