Botox cosmetic is a highly purified neurotoxin injected into the muscle causing a decrease in the function of that muscle. It causes minimal discomfort and swelling. It takes three to four days up to two weeks to see the full effect and usually lasts for three-four months. It is unusual to have significant numbness of the area injected afterwards. If you did experience this, it might be related to the topical agent used to numb the skin or some swelling and should resolve in a day or two.

Botox Injection