TLDR Blue light therapy is promising for skin and hair conditions but needs more research for widespread use.
Blue light therapy, using wavelengths of 400–500 nm, is a non-invasive treatment gaining popularity in dermatology for conditions like acne, psoriasis, atopic dermatitis, vitiligo, and androgenetic alopecia. It works by generating reactive oxygen species to combat pathogens and has anti-inflammatory effects that reduce cytokine production. Blue light also stimulates hair growth and repigmentation in vitiligo. Advancements in LED technology have improved treatment delivery, but standardized protocols and long-term safety studies are needed. Despite its minimal side effects, further research is required to fully integrate blue light therapy into dermatological practice.
The combined treatment increased hair density in most patients with Androgenetic Alopecia.
10 citations,
September 2022 in “Journal of Biophotonics” Blue light therapy is safe for skin and may protect against UV radiation.
23 citations,
July 2021 in “Life” Blue light can help treat skin conditions like eczema and acne without major side effects.
70 citations,
April 2017 in “Lasers in surgery and medicine” Blue light promotes hair growth by interacting with specific receptors in hair follicles.
April 2024 in “International journal of molecular sciences” Light-based treatment, Photobiomodulation, shows promise for non-invasive skin therapy with few side effects.
8 citations,
October 2020 in “Lasers in Medical Science” LLLT helps treat hair loss by increasing blood flow, reducing inflammation, and stimulating growth factors.
17 citations,
December 2015 in “International Journal of Cosmetic Science” Visible light can improve skin disorders and hair loss, but more research is needed to understand long-term effects.
22 citations,
March 2018 in “American Journal of Clinical Dermatology” New acne treatments show promise as alternatives to traditional therapies.
9 citations,
August 2017 in “Photochemistry and Photobiology” Red light at 627 nm can safely trigger IL-4 release in skin cells, potentially helping treat inflammatory skin conditions.
