The skin on my boyfriend's face is flabby, which seems to be not a problem of weight loss. Just a layer of skin, as loose as an old man. It happened after he lost weight. It should be that your skin recovery function is not very good. After losing weight, it will become as loose as a woman's stomach after giving birth, and then it will be gradually absorbed by the body. Smile more. If it is skin, smile more, do more oral exercises, and practice to open your mouth.