The formation of tear troughs is usually caused by a thin layer of fat or loss of collagen. Currently on the market, the best materials used for filling the tear trough include hyaluronic acid, collagen, and autologous fat. 1. Hyaluronic acid or collagen: Hyaluronic acid and collagen injections are relatively convenient and can be seen immediately after injection, without affecting work and life. The disadvantage is that the maintenance time is relatively short. 2. Autologous fat: autologous fat is permanent once it becomes active, because it belongs to the autologous tissue, generally fill 1 to 2 times the tear trough can achieve the effect of permanent disappearance. The disadvantage is that you need to liposuction in the legs or abdomen, relatively more steps. For those who need to fill the tear trough, it is recommended to go to regular hospitals or institutions, under the guidance of professional doctors for standardized treatment.