Thickening and hardening of tissue, commonly referred to as lumps, is one of the most common problems faced by people after hyaluronic acid injections. Patients wonder whether the lumps will disappear on their own, whether they need to be treated in some way, whether they mean that the procedure was performed incorrectly, and what they should do next. For this reason, many myths have arisen about hyaluronic acid lumps, which are passed on by people who have undergone the procedure and which usually turn out to be untrue. In this article, we take a closer look at the so-called lumps after hyaluronic acid treatment – we consider what they actually are, whether they will disappear on their own, and how to deal with them.