Visible Red Light Enhances Physiological Anagen Entry In Vivo And Has Direct And Indirect Stimulatory Effects In Vitro

    December 2014 in “ Lasers in surgery and medicine ”
    Yi‐Shuan Sheen, Shih‐Kang Fan, Chih‐Chieh Chan, Yueh‐Feng Wu, Seon-Young Jee, Sung‐Jan Lin
    TLDR Red light promotes hair growth by directly stimulating hair cells and improving cell communication.
    The study investigated the effects of visible light on hair follicles, focusing on red light (630 nm) compared to green and blue light. In vivo experiments on mice showed that red light accelerated the transition from telogen to anagen phase faster than the other lights. In vitro, red light stimulated the proliferation of outer root sheath keratinocytes and dermal papilla cells by promoting cell cycle progression through extracellular signal-regulated kinase phosphorylation. Additionally, red light enhanced epithelial-mesenchymal interactions, with fibroblast growth factor 7 playing a key role. These findings suggested that red light could promote hair growth by both direct and indirect mechanisms.
    Discuss this study in the Community →

    Research cited in this study

    28 / 28 results

    Related Community Posts Join

    6 / 645 results

      community Natural Remedies: Polyphenols and Hair Loss

       19 upvotes 5 years ago
      Natural remedies to treat hair loss, such as polyphenols, apple peel extract, grape seed extract, green tea extract, peppermint oil, pumpkin seed oil, apigenin, Ginkgo biloba, red clover extract, olive leaf extract, Ecklonia Cava and Grateloupia elliptica. In addition, terpenes, carotenoids, and tocopherols were discussed as potential treatments.

      community 2 years Fin + Minoxidil Regrowth

      in Finasteride/Dutasteride  113 upvotes 4 months ago
      A user shared their two-year progress using 2.5mg finasteride daily and minoxidil twice daily, recently adding topical dutasteride. Another user questioned the high finasteride dosage, noting no benefits over 1mg.

      community Got a microscope camera. Here’s the difference between healthy and miniaturized hair

      in Progress Pictures  492 upvotes 2 years ago
      A user who shared progress pictures of their scalp using a microscope camera, demonstrating the difference between healthy and miniaturized hair. Various explanations for the cause of this were discussed, such as DHT build-up in scalp sebum causing an autoimmune response leading to inflammation and eventual hair loss, with some suggesting a do-it-yourself treatment involving adding ascorbic acid powder to shampoo.

    Similar Research

    5 / 1000+ results