Low-Level Laser Treatment Accelerated Hair Regrowth in a Rat Model of Chemotherapy-Induced Alopecia

    June 2012 in “ Lasers in Medical Science
    Tongyu C. Wikramanayake, Alexandra C. Villasante, Lucía Mercedes Mauro, Keyvan Nouri, Lawrence A. Schachner, Carmen Perez, Joaquín J. Jiménez
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    TLDR Low-level laser treatment helped rats regrow hair faster after chemotherapy.
    In a 2012 study, low-level laser (LLL) treatment was found to accelerate hair regrowth in a rat model of chemotherapy-induced alopecia (CIA). The study involved young rats, with ten in each treatment group, which were administered chemotherapy to induce alopecia and then treated with or without LLL. Results showed that rats treated with LLL experienced hair regrowth 5 days earlier than those treated with chemotherapy alone or with a sham laser. Histological analysis supported these findings, and the treatment did not protect leukemia cells, suggesting it would not interfere with chemotherapy's effectiveness. The study, which also included a leukemia protection test with four groups of 45 rats each, concluded that LLL devices like the HairMax LaserComb® could be a promising noninvasive treatment for CIA and recommended further clinical trials. The research was supported by the Locks of Love Foundation and declared no conflict of interest.
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