Red And Green LED Light Therapy: A Comparative Study In Androgenetic Alopecia

    October 2024 in “ Photodermatology Photoimmunology & Photomedicine ”
    Jiratchaya Tantiyavarong, Sasin Charoensuksira, Jitlada Meephansan, Sirashat Hanvivattanakul, Yossawat Rayanasukha, Thitikorn Boonkoom, Kittipong Tantisantisom
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    TLDR Red LED therapy is more effective than green LED for improving hair growth in androgenetic alopecia.
    This study investigated the effects of red and green LED light therapy on androgenetic alopecia (AGA) using an LED helmet on 17 participants (47.1% male, 52.9% female, average age 46.47 years) over 6 months. Both red and green LED therapies significantly increased hair diameter, non-vellus hair density, and patient satisfaction. Red LED therapy showed a greater increase in hair diameter and a decrease in vellus hair density compared to green LED therapy. Minimal adverse effects were reported, such as tolerable scalp heat and mild redness. The study concludes that both red and green LED therapies are effective, safe, and viable alternatives for managing AGA, with red LED showing superior improvements in certain measures.
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