Hello, after injecting botulinum toxin, the muscles will continue to contract within 2-3 hours. In about 5-7 days, the expression can return to nature.

In order to better return to normal, we need to pay attention to the following points:

(1) Strictly follow the doctor's advice and care after operation.

② Do not massage the treatment site within 2-3 hours after injection.

③ It is best to keep the head upright 3-4 hours after injection.

④ The injected muscle should be continuously contracted within 2-3 hours after injection, because the toxin selectively binds to the moving muscle.

⑤ If the adverse reaction lasts for more than one week, contact the doctor as soon as possible.