As for facial stiffness after Botox, it is a normal physiological phenomenon, and it will go down in a short time after injection, so beauty lovers need not worry too much. This phenomenon is normal and temporary, and will soon return to nature. What's the reaction after injecting botulinum toxin? The reactions after botulinum toxin injection mainly include myasthenia gravis and the corresponding manifestations caused by the spread of face-lifting needle to adjacent muscle tissues, and these clinical manifestations are related to the injection site and the injection dose of face-lifting needle. Individual patients found fever, discomfort and fatigue after injection of botulinum toxin. Generally speaking, these clinical manifestations are short-lived and disappear naturally within a few weeks. The above is the information about botulinum toxin injection introduced by experts in our hospital. You should have a clear understanding. However, experts remind that injecting botulinum toxin still needs to find a regular plastic surgery hospital.