Complications of dermal filler treatments—a registry-based study from Finland

The popularity of dermal filler treatments is increasing in the Nordic countries. In Finland, legislation does not mandate healthcare training for those performing dermal filler treatments, potentially leading to increased complications. This registry-based study aimed to characterize complaints on dermal filler treatments received by Finnish Authorities, using data from (1) Finnish Safety and Chemicals Agency (TUKES), (2) the National Supervisory Authority for Welfare and Health (Valvira), (3) the Finnish Competition and Consumer Authority (KKV), and (4) Regional State Administrative Agency (AVI). From January 1, 2017, to December 31, 2024, 19 complaints were received by KKV, unsuccessful lip filler treatments being the most common issue (59%). No life-threatening complications were reported. Most cases (56%) occurred in beauty salons, with treatments primarily performed by beauty salon employees (44%), followed by registered nurses (24%), and only 8% by medical doctors. Notably, 72% of the complications occurred in the last 3 years. The study underscores the need for regulatory oversight and advanced medical expertise in administering dermal filler treatments due to the increasing complications and the involvement of non-medical personnel. Complications may require immediate medical first aid and should be classified as procedures requiring advanced medical expertise.