September 2017 in “Journal of Investigative Dermatology” Blue light helps hair growth by affecting specific proteins in hair follicle cells.
July 2002 in “Dermatologic Surgery” Some people's hair turned white or gray after using intense pulsed light for hair removal, and for some, it was permanent.
23 citations
,
June 2021 in “Lasers in Medical Science” Blue light therapy may help with hair growth, but more research is needed.
20 citations
,
October 2021 in “Applied materials today” A new microneedle patch and yellow light therapy significantly promote hair regrowth.
19 citations
,
February 2018 in “Lasers in Medical Science” Red light and LED treatments help hair grow by activating a specific cell signaling pathway.
15 citations
,
September 2014 in “Dermatologic surgery” Diode laser removes hair better but is more painful than intense pulsed light.
6 citations
,
June 2013 in “British Journal of Dermatology” Intense pulsed light treatment mainly damages pigmented hair parts but spares stem cells, allowing hair to regrow.
2 citations
,
December 2024 in “Journal of Photochemistry and Photobiology B Biology” Pulsed wave red LED light is more effective than continuous wave light for promoting hair regrowth.
1 citations
,
March 2006 in “Dermatologic Surgery” Using a polarized LED magnifier during hair transplants makes creating recipient sites easier and may increase hair density.
April 2024 in “Lasers in medical science” Near-infrared LED light improves skin rejuvenation and hair growth better than white LED light.
September 2018 in “The Medical Journal of Cairo University/The Medical Journal of Cairo University” Polarized light therapy helps hair regrowth in alopecia areata patients.
117 citations
,
September 2013 in “Lasers in Surgery and Medicine” Red light therapy at 655 nm significantly improved hair growth in men with hair loss.
41 citations
,
September 2010 in “British journal of dermatology/British journal of dermatology, Supplement” Both intense pulsed light and long-pulsed diode laser effectively reduced facial hair in women, with no significant difference in satisfaction after 6 months, but intense pulsed light was more painful.
9 citations
,
November 2021 in “PubMed” FDA-approved low-level light/laser therapy devices can significantly increase hair density in people with pattern hair loss.
8 citations
,
July 2020 in “BMC genomics” The research found genes that change during cashmere goat hair growth and could help determine the best time to harvest cashmere.
7 citations
,
July 2004 in “International Journal of Cosmetic Science” Different hair types from various ethnic groups affect hair shine due to characteristics like thickness and shape.
April 2025 in “Journal of the Association for Research in Otolaryngology” NM2 and RLC phosphorylation are essential for normal inner ear hair cell function.
January 2023 in “International journal of research publications” Rice bran oil works as well as 2% minoxidil to prevent hair loss and promote hair growth.
January 2019 in “Journal of clinical and cosmetic dermatology” Combining laser light therapy and growth factor treatment improves hair growth in people with hair loss.
67 citations
,
October 1997 in “Dermatologic Surgery” The EpiLight Hair Removal System removed about 60% of hair with some side effects, and more research is needed to confirm long-term effectiveness.
23 citations
,
April 1999 in “Dermatologic Clinics” Pulsed-intense light can significantly reduce hair, with effectiveness depending on treatment number and timing, and has mild side effects.
13 citations
,
July 2011 in “Photomedicine and laser surgery” Coloring white hair before IPL treatment effectively helps remove it.
March 2023 in “Cosmetics” The "in-motion" technique for hair removal is less painful and safer than the traditional method, with similar effectiveness.
December 2014 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Hair removal with intense pulsed light can cause rare skin lesions that are hard to fully treat.
34 citations
,
May 2017 in “Lasers in Surgery and Medicine” Combining low-level light therapy and minoxidil 5% is more effective for female hair loss than using either treatment alone.
23 citations
,
September 2011 in “Journal of Dermatological Science” Red LED light helps mouse hair grow by increasing growth factors from skin cells.
21 citations
,
August 2013 in “Journal of Dermatological Treatment” Low-level light therapy may help hair regrowth, but more research is needed.
10 citations
,
January 2010 in “Journal of cosmetic and laser therapy” The letter criticizes a study's methods and small size, suggesting larger, better-designed research would show low-level light therapy effectively grows hair.
8 citations
,
February 2017 in “Archives of Dermatological Research” Intense pulsed light treatment effectively reduces underarm hair by making hair follicles smaller and extending their resting phase.
5 citations
,
October 2020 in “Lasers in Medical Science” Combination therapy works best for female hair loss, increasing density and thickness.