Treatment for Filler-Induced Alopecia with Concentrated Growth Factors.

Hyaluronic acid (HA) is widely used for non-surgical facial rejuvenation but is associated with risks, including rare filler-induced alopecia (FIA) in the temporal and frontal regions. While subcutaneous hyaluronidase (HAase) injection is the standard treatment, we report an alternative approach using concentrated growth factor (CGF) injections. A 29-year-old female presented with a pruritic alopecic patch in the right temporal region that appeared 20 days after receiving HA filler injection. A well-demarcated 6×4 cm alopecic patch persisted despite prior treatment with HAase. The patient subsequently underwent four CGF injections. During the ten-month follow-up, significant hair regrowth was observed. This case suggests that CGF monotherapy is a promising treatment for FIA.