Most fillers have a local anesthetic built into them, so the answer is not. Although most patients do not find it necessary, a local anesthetic can also be applied to the treatment area prior to injection if you are worried about pain. Following the treatment, you may feel some slight swelling and bruising that will usually be gone in 5 – 7 days, depending on the treatment area. You should contact our office if you experience any lasting pain or abnormal side effects after your treatment.