Dermal fillers are a popular and trusted cosmetic treatment for good reason. They provide immediate benefits with minimal to no recovery time. However, every injection involves the risk of swelling, bruising and pinpoint bleeding. These side effects are normal and subside within the first week or two following your session. To minimize your risk of side effects, avoid blood-thinning substances like NSAIDS, aspirin, alcohol and green tea for at least a week prior to your session. Icing your treatment areas on and off will also help reduce swelling by shrinking your blood vessels and curbing any bleeding.