Can everyone tell me what this is? People who love beauty come in.

Hello, you will understand when you are old. This is the character of the mouth. In the process of natural skin aging, the absorption and function of connective tissue fibroblasts to vitamin C gradually weaken with age, and vitamin C is an indispensable catalyst in the synthesis of collagen fibers. Due to the decrease of collagen fiber synthesis, the support of dermis to epidermis becomes worse, and wrinkles at the corners of the mouth are inevitable. Therefore, the long splayed corners of the mouth are directly related to the reduction and loss of collagen. In addition, often making exaggerated expressions will also lead to the premature formation of long splayed corners of the mouth.