The lips are particularly prone to swelling, especially if hypodermic needles are used to inject Volbella instead of the newest technique using the Microcannula, which is like a blunt-tipped needle with a tiny extrusion port near the tip. The Microcannula is less likely to tear tissue and blood vessels, which causes the swelling and bruising. Of course, if there is too much swelling on one side, it becomes more difficult to balance the symmetry of your lips so they are even. I recommend against having my patients massage their own lips, particularly immediately after injection, because repeated compression tends to cause even more swelling. Instead, I recommend the use of ice for an hour--applied intermittently--to minimize swelling, though occasionally I offer mild steroid pills like Medrol Dosepak to accelerate the process. I do offer to massage lips a week or two later as needed, to smooth the appearance after all the swelling, or water, has been absorbed. It is common to have more swelling on one side immediately after injection, especially if more injection has been needed on one side. Excessive Juvederm or Restylane can be dissolved using the enzyme, Hylenex, in an off-label use. I like Juvederm Volbella for those who want smoother lips without adding much fullness, which is due to a decrease in the affinity to absorb water--as seen in our patient's lips in the January 2017 issue of MedEsthetics Magazine. When I teach physicians for Allergan or Galderma, the lips are the second most difficult area to inject because even a slight variation in symmetry will be readily apparent. Ideally, I suggest you have cosmetic filler injections done by someone with expertise in using Microcannulas instead of hypodermic needles. As always, I recommend you seek the care of a physician whose primary practice and experience is the procedure you are seeking--instead of going to someone who just has general cosmetic medicine credentials--but rarely does what you seek...Best Wishes, Garry R. Lee, MD