When skin is dehydrated, it defends itself by producing a protective film: excessive secretion of sebum. While the role of this film is to hydrate and protect the skin, it tends to makes it oily ,shiny and feel uncomfortable.Thanks to its incredibly airy texture, Aqua Diffusion Fluid moisturizes skin deep down. The skin's integrity is enhanced and sebum production is regulated. Skin is soft and clear. Intensely moisturized, it regains its elasticity.