Hyaluronic acid, or hyaluronic acid, is a substance that exists in the body itself and has a strong water-locking capacity. The reason why young skin is hydrated and elastic is because it is rich in hyaluronic acid. Hyaluronic acid injections are used for wrinkle reduction, filling, anti-aging and hydration, slowing down the metabolism of collagen loss and maintaining the existing youthfulness and texture of the skin. After hyaluronic acid injections, there is no particular impact after aging. Because hyaluronic acid injections are time-sensitive, they can generally last anywhere from 6-9 months, and long-acting hyaluronic acid may last about 1-2 years, and hyaluronic acid is not injected once, but will be absorbed by the body after the consumption cycle, and generally does not produce rejection reactions, and the chances of allergies are extremely low. After the hyaluronic acid is completely metabolized, the skin will naturally return to its previous condition without other adverse effects. Candidates need to go to regular medical institutions for hyaluronic acid injection to ensure the safety and effect of the injection. After the injection, they should also maintain a good lifestyle and avoid staying up late and drinking, otherwise it will lead to faster loss of hyaluronic acid.