TLDR Laser/light treatments for hair loss are popular but lack scientific data proving effectiveness.
This article discusses the use of laser and light-based treatments for male and female pattern hair loss. While there is little scientific data supporting the effectiveness of these treatments, they have become increasingly popular in both medical and non-medical settings. The authors believe that laser/light devices are safe if used properly, but there are no controlled, peer-reviewed studies validating current devices for hair loss. The mechanism of action by which photobiomodulation stops or reverses hair loss is unknown, and there have been no peer-reviewed blinded studies published on hair loss/hair growth. The authors recommend that all patients should be medically evaluated for any hair loss by a physician specialist to rule out other underlying medical conditions or the etiology of hair loss.
66 citations,
June 2006 in “Journal of The American Academy of Dermatology” Finasteride increases hair weight and count in men with hair loss, with best results after four years.
63 citations,
January 2006 in “Journal of cosmetic and laser therapy” The pulsed infrared diode laser is effective for treating hair loss in alopecia areata.
101 citations,
June 2005 in “Journal of The American Academy of Dermatology” Very few people experience increased hair growth after laser hair removal, especially those with darker skin and black hair.
75 citations,
August 2003 in “International journal of cosmetic surgery and aesthetic dermatology” The HairMax LaserComb made hair grow more and get stronger for people with hair loss.
7 citations,
March 2016 in “Journal of Cosmetic and Laser Therapy” Home-use lasers and IPL devices are unlikely to directly cause paradoxical hair growth; it may be linked to inflammation or hormonal issues.
10 citations,
January 2010 in “Indian journal of dermatology, venereology, and leprology” Long pulsed Nd: YAG laser is safe and effective for long-term hair reduction in darker skin types.
68 citations,
January 2007 in “Journal of Cosmetic and Laser Therapy” Laser/light treatments for hair loss are popular but lack scientific data proving effectiveness.