The eyes are the windows to the soul, and if the eyelids are sunken, they can give the appearance of aging and fatigue. Eyelid sunkenness means that the soft tissue between the upper and lower lids and the orbital rim is not full and atrophied, resulting in varying degrees of sunkenness in the eye socket, which can affect the local and overall appearance of the eyes and face, and can be corrected by a number of methods, such as hyaluronic acid and autologous fat fillers. Hyaluronic acid is originally found in the human skin and can help the skin absorb water from the body and skin surface, and can also make the skin retain water for a long time. When hyaluronic acid absorbs water, it leaves the elastic fibers and collagen in an environment full of moisture, which gives the skin elasticity and restores flatness, fullness and smoothness to the sunken skin of the eyelids. Hyaluronic acid injections have a significant effect on eyelid sunkenness, but the duration of the effect is short, about 1 year, so if you need to maintain the effect for a long time, you need to keep injecting. However, if you use autologous fat fillers, you can avoid this trouble. Autologous fat fillers can also improve eyelid hollowness by suctioning excess fat from other parts of the body and filling the eyelid area with fat particles through special processing techniques and then by injection, which is safe, natural and long lasting.