Before the age of 18, the collagen and elastic fibers in the skin are active, and the skin itself is full of water. With age, after the age of 18, the nutrients in the skin drain away and the skin problems become apparent.The main function of hyaluronic acid mask is to replenishment and water locking. It is the most basic skin care product and is suitable for people of any age group. However, considering the needs of the skin and the effect of use, we would recommend that people of some ages use it better.