From the Research
Red light therapy has been shown to promote hair growth, particularly in individuals with androgenetic alopecia, as demonstrated by a 2021 study published in the Annals of Dermatology 1. This treatment uses low-level laser therapy (LLLT) at wavelengths typically between 630-670 nm to stimulate hair follicles. Some FDA-cleared devices like the HairMax LaserComb, CAPILLUS, and iRestore systems are available for home use, with recommended treatment sessions of 15-30 minutes, 3-7 times weekly for at least 3-6 months. Red light therapy works by increasing blood circulation to the scalp, reducing inflammation, and energizing cellular mitochondria in hair follicles, potentially extending the growth phase of hair. Key points to consider when using red light therapy for hair regrowth include:
- Results vary significantly between individuals, with better outcomes typically seen in those with early-stage hair loss rather than completely bald areas
- For best results, combine red light therapy with traditional treatments like minoxidil (Rogaine) or finasteride (Propecia) after consulting with a dermatologist
- While generally safe with minimal side effects, this therapy requires consistent long-term use and patience to see potential benefits Other studies, such as those published in 2017 2, 2021 3, 2013 4, and 2014 5, also support the use of red light therapy for promoting hair growth, although the level of evidence and quality of the studies may vary. Overall, red light therapy is a promising treatment option for individuals with androgenetic alopecia, and its use in combination with other treatments may lead to improved outcomes.