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Addressing skepticism, several studies have investigated the efficacy of low-level laser hair loss treatment for hair growth. Researchers Pinar Avci, MD and Gaurav K. Gupta, MC, PhD, et al. published their study in the journal Lasers in Surgery and Medicine in 2015 (“Low-level laser (light) therapy (LLLT) for treatment of hair loss,” August 23 2013), and their findings were encouraging.
“LLLT for hair growth in both men and women appears to be both safe and effective,” say the authors, cautioning that the optimum wavelength and other factors were not identified in their clinical research on human subjects. The bulk of prior research on lasers and hair loss, which found that LLLT consistently stimulated hair growth, was with lab animals.
Which begs the next question: is it better to pursue a LLLT treatment strategy in the home or in a hair loss treatment studio? It depends somewhat on the individual.
Interest in LLLT as a hair-restorer goes back decades when use of the technology with laboratory mice incidentally stimulated hair growth. Over time, studies identified that that laser treatment increases blood circulation in the scalp to stimulate the growth of new hairs in humans. It’s generally most effective at addressing androgenic alopecia, male pattern baldness, where hair follicles are blocked from producing new hairs by the hormone DHT. Hair loss medications (finasteride and minoxidil) otherwise block or diminish the effects of DHT.
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