'5 + Hyaluronic Acids by Purophi is an incredible booster that provides extra hydration to your facial skin, thanks to the presence of five different hyaluronic acids that help keep your skin's microbiota in perfect balance. Inside, it contains low molecular weight hyaluronic acid that can act on the deeper layers, medium molecular weight, and high molecular weight hyaluronic acid that acts on the more superficial layers. Furthermore, it contains cross-linked hyaluronic acid and the plant-based version derived from the tremella mushroom. The booster will allow you to perform an antioxidant and anti-pollution action, and the different molecular weights provide hydration to the various skin layers; in particular, the cross-linked hyaluronic acid forms a film on the surface, which results in The cross-linked hyaluronic acid is a gel based on cross-linked hyaluronic acid of biotechnological origin, and the cross-linking agent used is urea, which promotes una better moisturizing action on the skin. This type of hyaluronic acid is more resistant to the enzymatic action of hyaluronidases, promoting una longer duration of hyaluronic acid on the facial skin, but above all, it allows for una better covering and lifting action thanks to the film on the skin surface, ideal for increasing skin protection from external and polluting agents. The hyaluronic acid is obtained through extraction from the tremella mushroom, also called the snow fungus, whose properties are known in the oriental tradition of beauty rituals. Inside, it contains a natural biopolymer with a weight of 1000 kDa, which allows it to emulate the moisturizing action of hyaluronic acid. Its effect is tested through SimDerma, una a multiparametric platform for in vitro tests, ideal for examining the extract based on about 34 laboratory assays, with important antioxidant and soothing properties that tend to increase the skin's natural defenses.'