The growth of human scalp hair in females using visible red light laser and LED sources
August 2014
in “Lasers in Surgery and Medicine”
TLDR Red light therapy is safe and effectively increases hair growth in women with hair loss.
In a 2014 study, 42 women aged 18-60 with androgenetic alopecia were treated with Low Level Laser Therapy (LLLT) to assess its effectiveness in promoting hair growth. The participants were divided into an active group of 24 women, who received treatment with a device emitting red light at 655 nm, and a placebo group of 18 women, who received treatment with non-functional lights. After 16 weeks and 60 treatments, the active group experienced a significant 37% increase in hair counts compared to the placebo group. The study concluded that LLLT is a safe and effective treatment for female pattern hair loss, with no reported side effects, and is suitable for home use. The results were consistent with a previous study on men, which showed a 35% increase in hair counts.
View this study on onlinelibrary.wiley.com →
Cited in this study
research The growth of human scalp hair mediated by visible red light laser and LED sources in males
Red light therapy at 655 nm significantly improved hair growth in men with hair loss.
research Low‐level laser (light) therapy (LLLT) for treatment of hair loss
Low-Level Laser Therapy is effective and safe for hair growth with minimal side effects.
research Reply to: The use of low-level light for hair growth: Part I
The letter criticizes a study's methods and small size, suggesting larger, better-designed research would show low-level light therapy effectively grows hair.
research Effect of Helium-Neon Laser Irradiation on Hair Follicle Growth Cycle of Swiss Albino Mice
Helium-neon laser treatment can stimulate hair growth in mice.
research The use of low-level light for hair growth: Part I
research HairMax LaserComb® Laser Phototherapy Device in the Treatment of Male Androgenetic Alopecia
HairMax LaserComb® effectively promotes hair growth and stops hair loss in males with androgenetic alopecia, with no serious side effects.
research The current role of laser/light sources in the treatment of male and female pattern hair loss
Laser/light treatments for hair loss are popular but lack scientific data proving effectiveness.
research Hair Regrowth and Increased Hair Tensile Strength Using the HairMax LaserComb for Low-Level Laser Therapy
The HairMax LaserComb made hair grow more and get stronger for people with hair loss.
Related
research Baricitinib Results in Eyebrow and Eyelash Growth in Patients With Alopecia Areata Who Do Not Achieve 20% or Less Scalp Hair Loss
Baricitinib helps grow eyebrows and eyelashes in severe alopecia areata patients.
research Ambiguous alopecia in a 36-year-old woman
The woman has unexplained hair loss and it's unclear what her condition is or how to treat it.