A infrequent side effect of Juvederm, Restylane and Boletero HA fillers is in the notorious “Blue Bump”. These bumps arise when the filler is injected too high in the skin, and not into the mid or deep dermal layer. The blue color comes from light reflecting off the filler under the skin. In scientific circles, this is known as the “Tyndall effect”. When the filler is present, visible light is diffused by the filler and reflected in a specific way that creates the appearance of blue bumps. The good news is, this is not a permanent effect and the blue discoloration can be easily treated with a bit of hyaluronidase. Hyaluronidase dissolves the unwanted hyaluronic acid in the filler – removing it in part or total – making sure the blue bump is removed and the cosmetic filler looks perfect!