The so-called after-effects of hyaluronic acid chin filling refers to the adverse reactions that may lead to localized infection or localized unevenness. Regular injection of hyaluronic acid usually does not cause obvious adverse reactions, but if it is not operated properly, it may lead to localized infection at the injection site, causing redness, swelling, pain, and even erosion at the injection site. In addition, if the operator’s technique is not good, it is likely to cause localized unevenness, asymmetry and other manifestations during injection, thus affecting the appearance. Usually the effect is maintained for a relatively short period of time, usually around 6 to 12 months, the effect will gradually disappear and multiple treatments are required. It is recommended that patients in need of hyaluronic acid chin filler treatment go to regular institutions to avoid adverse reactions.