A dewy-eyed smile disrupts facial aesthetics and harmony to a certain extent, and correction is often required in clinical practice. If a gummy smile is caused by muscle hyperactivity, it can be solved with a single Botox. Because Botox can temporarily block the signaling of the upper lip muscles, the gums will not show too much when you smile, so as to correct the gum smile. In general, choose professional and formal medical beauty institutions to play Botox to gum smile is relatively safe, if the medical personnel operation is not appropriate or improper care of the applicant, there may be facial asymmetry, upper lip ptosis, smile is not natural, injected into the descending nasal muscles, the tip of the nose has a certain elevation and other risks, very few allergic reactions using epinephrine treatment. Therefore, it is recommended that candidates choose professional and formal medical beauty institutions for injection, and follow the doctor’s instructions to do a good job of care, to reduce the occurrence of complications. In addition, there may be slight swelling, which is a normal phenomenon, and can generally subside in about 3 days. It is recommended to press the root of the palm of the hand for 5-10 minutes after injection, apply ice pack for 15-30 minutes, apply erythromycin cream at the eye of the needle, and do not massage the injection site to prevent the spread of botulinum toxin. Keep your body upright for 6 hours after injection, do not lie down or do strenuous exercise, and avoid getting water on the injection site.