Hair Health

How does RLT help?


Red/NIR light (RLT) has proven to help both men and women with a wide variety of conditions to prevent hair loss and even regrow hair. Not only that, but RLT can also increase the thickness of each hair strand. Thus, red light therapy can help improve both the quality AND quantity of your hair!

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Male and female pattern hair loss (PHL) is a common, chronic dermatologic disorder. Male PHL (aka, androgenetic alopecia) affects 50 % of men by 50 years of age and the frequency and severity increases with age. Male or female PHL may be accompanied by psychosocial consequences including decreased quality of life and poorer body image.

To better understand how RLT can help prevent hair loss and promote hair regrowth, it helps to understand the three main phases of hair growth:

  1. Anagen - growth phase

  2. Catagen - transition of hair upwards towards skin pore

  3. Telogen - the blood supply to the hair follicle fully separates, growth ends

Red and near-infrared light apparently promotes the transition of hair follicles from the telogen phase back to the anagen phase, which facilitates increased duration in the growth phase and, thus, hair growth! Not only that, but RLT can also increase the growth rate in the anlagen phase while disallowing premature catagen phases, leading to a healthier head of hair.

Other mechanisms by which RLT may help hair health includes improving particular growth factors, modulation of inflammation, improved health and efficiency of mitochondrial functioning and/or positive effects on nitric oxide levels and blood flow to the area.


What does the research show?


"The majority of studies covered in this review found an overall improvement in hair regrowth, thickness, and patient satisfaction following LLLT (low level laser therapy) therapy." (1)

"Our results suggest that LLLT treatment may be an effective option to treat pattern hair loss in both men and women. (2)

"Subjects receiving LLLT at 655 nm achieved a 37% increase in hair counts as compared to sham treated control patients in this multicenter randomized controlled trial." (3)

 "LLLT appears to be a safe, alternative treatment for patients with androgenic alopecia. Clinical trials have indicated efficacy for androgenic alopecia in both men and women." (4)

**While the current scientific research seems to indicate many positive benefits of RLT in relation to hair health and preventing hair loss, there is still an appreciable necessity for more extensive research to be conducted in this area, including double-blind RCT (randomized controlled trials), to provide a more comprehensive, robust overview that will further elucidate the optimal parameters and appropriate uses of RLT, which will ultimately lead the most safe and efficacious uses for individuals looking to prevent hair loss and improve overall hair health.