Lip numbness after botox injection near my smile lines

Immediately after treatment with Botox, you may have mild swelling at the site of injection for about thirty minutes (I like to call them "mosquito bites") but you should not have any chance in sensation.  Any numbness is unusual, and should be evaluated by your physician. 

Numbness and tingling is fairly uncommon with botox injections but should resolve shortly. If you continue to experience numbness, I suggest consulting with your injector. Best, Dr. Emer

Botox can be used near and around the lips for various concerns. Botox normally does not cause numbing or tingling. If this lasts for more than a few minutes I recommend addressing it with your doctor.Sometimes when Botox is used around the lips, the muscles around the lips feel strange. It may be more difficult to whistle or suck from a straw. This typically resolves after two weeks or so. Good luck!

generally Botox is not used to inject smile lines, but any numbness after 5 minutes is most likely due to the injection rather than the Botox itself and should rapidly dissipate

Numbness can be seen after Botox injection and can take a few days to resolve. If it does not resolve in the next few days, I would followup with your physician injector.