Nasolabial folds, which are also known as “legal lines”, are two lines that extend down the side of the nose, and are a physiological structure that all normal people (including children) have. Apple muscle full of people smile, often make people feel in a bright mood, the reason, or “nasolabial folds” play a role, it is done on our facial expression plays a vital role. As we age, our nasolabial folds deepen. Too deep, there is a problem, “brackets” longer and longer, people look older and older, for many beauty seekers is a disturbing thing. I. Why does the nasolabial fold deepen? 1, physiological pulling nasolabial folds where the position of muscle movement is very frequent, people in the smile, the upper lip muscle upward, facial “grooves” deepening, the formation of the folding of muscle tissue. In addition, the nasolabial folds are located next to the nose and have a normal physiologic depression, the pyriform foramen. If there is a bone dysplasia, mouth convex, making the base of the nose concave, will also look nasolabial folds deepen. 2, apple muscle hypertrophy apple muscle hypertrophy people, in the smile will make nasolabial folds become very obvious. With the increase of age, the sagging of the apple muscle makes the depression deeper and deeper, which makes the nasolabial folds look deeper. On the other hand, skin laxity also further deepens the depth of nasolabial folds, which is a sign of ageing. Second, the nasolabial folds deepen how should we deal with? 1.Facial lifting for skin laxity It is the most direct way to reduce nasolabial folds by resetting the lax tissues. 2, liposuction for apple muscle hypertrophy Apple muscle fat downward shift makes the bottom more and more fat, even in static also seems very abrupt. Therefore, fiber optic lipolysis, liposuction and diamond sculpture can be used to reduce the amount of local fat. 3.Filling and bone grafting for localized depressions For localized depressions caused by dysplasia, simple filling and bone grafting at the base of the nose can be used to improve the depressions of nasolabial folds. These are the three main ways to deal with depressed nasolabial folds. However, Botox treatment is not recommended for all candidates. After Botox paralyzes the muscle, it is true that it is not depressed, but it will look like the upper lip is long, and it will also make our facial expression missing, so I do not recommend this method.