TLDR Phototherapy with red and blue light can effectively treat hair loss.
This study evaluated the effects of phototherapy using red (660 nm) and blue (440 nm) wavelengths on Androgenetic Alopecia (AGA) in 10 volunteers over 12 weekly sessions. Both wavelengths resulted in increased hair density, reduced central parting, more terminal hairs, and fewer vellus hairs, demonstrating the potential of phototherapy as a promising treatment for AGA.
70 citations,
April 2017 in “Lasers in surgery and medicine” Blue light promotes hair growth by interacting with specific receptors in hair follicles.
24 citations,
March 2015 in “Dermatologic Surgery” Home-use cosmetic laser and light devices show modest results for hair removal and acne treatment, but more research is needed for confirmation.
8 citations,
October 2020 in “Lasers in Medical Science” LLLT helps treat hair loss by increasing blood flow, reducing inflammation, and stimulating growth factors.
January 2023 in “Dermatologic Therapy” A new hand-held light therapy device was found to be safe and effective for treating mild-to-moderate acne.
4 citations,
December 2021 in “Applied sciences” Micro-needling with low-level light therapy effectively increases hair growth in people with mild to moderate hair loss.
