Using4Heavy water active technology, constructing a three-dimensional water storage sponge layer, accurately targeting different levels of the skin, cross-linked sodium hyaluronate polymer,24hLong-lasting moisturization, anti-PM2.5/UVCross-linked sodium hyaluronate polymer24hLong-lasting moisturizing bio-protective film, reducing water loss, resistingPM2.5/UV；Sodium hyaluronate can lock and replenish water on the surface of the skin; Acetylated sodium hyaluronate firmly adsorbs the stratum corneum, providing double hydration; Hydrolyzed sodium hyaluronate reaches the epidermis and dermis, deeply moisturizing and repairing the skin.