Thank you for sharing your question. Swelling after lip injections is entirely normal and usually only lasts a few days after treatment. When using the traditional needle technique, swelling and bruising can last as long as one week. In my practice, I like to use the microcannula technique, which minimizes the risk of swelling and bruising and gives a very even and natural looking result. In general, to minimize your risk of bruising and swelling, I recommend discontinuing any blood thinning medications such as aspirin, ibuprofen, etc., for 7 days prior to injections. For more information, I encourage you to consult with a board-certified specialist who is experienced with the microcannula technique for lip fillers.