From the Research
Low-level laser therapy (LLLT) or photobiomodulation (PBM) has been shown to promote hair regrowth in individuals with androgenetic alopecia, as demonstrated by a 2024 systematic review of the literature 1. The therapy uses low-level laser light to stimulate hair follicles, potentially increasing blood flow to the scalp and reducing inflammation. Some studies suggest it may help with androgenetic alopecia (pattern baldness) in both men and women. Key points to consider:
- Commercially available devices include laser combs, helmets, and caps, which typically require consistent use (usually 15-30 minutes, 3-7 times per week) for several months before seeing results.
- For best outcomes, LLLT should be considered as part of a comprehensive hair loss treatment plan that might include medications like minoxidil (Rogaine) or finasteride (Propecia) 2, 3.
- The therapy works by energizing cells in hair follicles, potentially extending the growth phase of the hair cycle.
- While generally safe with minimal side effects, LLLT is more likely to help with early-stage hair thinning rather than complete baldness, and individual results vary considerably 4, 5. It is essential to note that the level of evidence for LLLT in promoting hair growth is still considered low, and more controlled, large studies are needed to standardize the optimum treatment parameters and determine the long-term safety and efficacy of LLLT 3, 4.