The majority of patients will need approximately two to four injections in order to see their desired results. However, the amount of submental fat will determine how many treatments are needed on an individual, case-by-case basis. It is also important to note that there are potential side-effects to Kybella treatments, which may include some slight swelling, bruising, and pain at the site of the injections, but these side-effects usually resolve themselves within a few days following treatment without the need for medical intervention. Typical treatments of Kybella usually consist of one and three vials of Kybella per treatment, which is determined by the amount of submental fat that the patient has. If you have any questions about the amount of Kybella needed for treatment of your submental fat – or double chin – or how many treatments will be needed to achieve your desired results, you should speak with your practitioner to gain a better understanding of your Kybella treatment.