Adopting4Heavy 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/UVSodium Hyaluronate: Locks and replenishes moisture on the skin surface; Acetylated Sodium Hyaluronate: Firmly adheres to the stratum corneum, providing double hydration; Hydrolyzed Sodium Hyaluronate: Penetrates into the epidermis and dermis, deeply moisturizing and repairing the skin.