According to the facial aesthetics viewpoint of “three chambers and five eyes”, the chin is located in the lower 1/3 of the face and is the lower chamber of the “three chambers”, and its size and prominence play a vital role in the appearance of Its size and prominence play a vital role in the beauty of the contour of the face. The proportion and position of the chin, lips and nose determine the beauty of the facial contour. Therefore, even if the other parts of the face look good, a poorly formed chin will still spoil the overall beauty. In addition, the chin is often seen as an external sign to judge a person’s personality. For example, a receding chin is often considered a symbol of timidity and indecisiveness, while a person with a well-defined and slightly forward chin is considered to be brave and resolute. If we compare the face to an article, then the chin is like the closing paragraph of the article, and a good closing will give people a sense of clarity and delight. Therefore, many people now choose to adjust the chin, which has a profound impact on the facial contour, through cosmetic surgery. Therefore, many people are concerned about how long can chin pads last? The materials currently used to pad the chin can be broadly divided into: silicone, tumescent, hyaluronic acid, collagen, autologous fat, different materials to maintain the time is different. 1, silicone once successful can be retained permanently, if there is no serious improper location and rejection are not required to remove. However, the general requirement of silicone materials implanted in the body 10 years later, we need to conduct regular checks, if there are problems need to be removed in a timely manner. 2, tumescent tumescent material is not easy to rejection reactions, and the combination of solid autologous tissue, after placement is not easy to move and displacement, can be maintained for 10 years or more. However, this material is prone to infection and requires regular inspection. In addition, the expansion of the chin may have shrunk over time, once the emergence of the situation should be taken seriously. 3, hyaluronic acid Hyaluronic acid has the characteristic of being easily absorbed by the body, and the maintenance period is about 6 to 9 months, after which it needs to be injected again. However, hyaluronic acid chin augmentation is less traumatic and recovery is faster. Within 24 hours after the injection, try to minimize touching or impact to prevent the chin from being deformed. There will be slight redness, swelling and itching after the injection. In addition, it may feel a little hard after injection, which is normal and will generally soften after two weeks. 4, collagen Collagen will pass with time, the older the person is, the more you can’t stay, the effect lasts for a few months or even a year for reasons such as personal maintenance. Collagen is a necessary part of the body and is very compatible and does not cause any rejection. The actual collagen will be very natural after 2 to 3 weeks of dissolving with the chin tissue. 5. Autologous fat Autologous fat transfer has an absorption rate of about 20 to 80% (another commonly accepted figure is 30 to 70%). The results are very dependent on the personal experience of the surgeon, but no experienced surgeon can 100% guarantee that the patient will get the desired results after one procedure, and some people may have to do it 2 to 3 times to get satisfactory results. The transplanted fat is similar to normal fat, and after 6 months, it basically proves to be permanently viable.