April 2018 in “Journal of Investigative Dermatology” Light can activate hair growth through a pathway from the eyes to hair follicles.
May 2017 in “Journal of The American Academy of Dermatology” LED light helps human hair root cells grow and move by activating certain cell pathways.
January 2025 in “UiTM Institutional Repositories (Universiti Teknologi MARA)” Dandruff can affect confidence and should be treated with proper shampoos or medical advice.
June 2019 in “Brain Imaging and Behavior” Hair loss can indicate brain aging and potential small vessel disease, but more research is needed to understand the clinical impact.
81 citations
,
August 2014 in “Lasers in Surgery and Medicine” Red light therapy is safe and effectively increases hair growth in women with hair loss.
62 citations
,
July 2018 in “Lasers in Medical Science” LED therapy is safe and shows potential for treating skin conditions and promoting hair growth, but more research is needed.
33 citations
,
January 2017 in “Annals of Dermatology” LED light can help hair growth by activating specific cell pathways.
30 citations
,
January 2015 in “BioMed Research International” Continuous light exposure in rats leads to PCOS-like symptoms and suggests sleep habits might affect the disorder's development.
19 citations
,
February 2018 in “Lasers in Medical Science” Red light and LED treatments help hair grow by activating a specific cell signaling pathway.
9 citations
,
August 2017 in “Photochemistry and Photobiology” Red light at 627 nm can safely trigger IL-4 release in skin cells, potentially helping treat inflammatory skin conditions.
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.
7 citations
,
December 2020 in “Clinics in Dermatology” Some alopecia treatments might help treat COVID-19, but more research is needed.
2 citations
,
March 2025 in “Archives of Dermatological Research” HEV light can harm or help skin and scalp, so safe exposure guidelines are needed.
November 2025 in “SKIN The Journal of Cutaneous Medicine” Low-level light therapy safely increases hair growth in various types of hair loss.
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” Pulsed red light boosts collagen and energy in cells faster than continuous red 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.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Blue light can help hair grow by affecting certain receptors in hair follicles.
September 2017 in “Journal of Investigative Dermatology” Blue light helps hair growth by affecting specific proteins in hair follicle cells.
January 2015 in “Our Dermatology Online” Intralesional triamcinolone is the most effective treatment for hair regrowth in alopecia areata patients.
January 2015 in “Przegla̧d dermatologiczny” Intralesional triamcinolone is the most effective treatment for alopecia areata, followed by excimer light therapy, and then topical minoxidil. The scalp responds better to treatment than the beard area.
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.
65 citations
,
March 2016 in “Lasers in Medical Science” Most low-level light therapy studies did not accurately report how light was measured, affecting treatment reliability.
31 citations
,
June 2018 in “Dermatologic Surgery” Low-level light therapy safely improves hair coverage, thickness, and count in androgenetic alopecia patients.
25 citations
,
October 2012 in “Dermatologic clinics” Laser and light treatments can effectively remove hair long-term.
24 citations
,
March 2015 in “Dermatologic Surgery” Home-use cosmetic laser and light devices show modest results for hair removal and acne treatment, but more research is needed for confirmation.
16 citations
,
November 2016 in “Journal of Cosmetic and Laser Therapy” Laser and light therapies, especially the 308 nm excimer laser, are effective and safe for treating alopecia areata, but more research is needed.
12 citations
,
July 2016 in “Forensic science international” The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.
11 citations
,
July 2004 in “International Journal of Cosmetic Science” The conclusion is that a new method to measure hair shine was confirmed to match people's visual assessments.
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.
5 citations
,
March 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Dynamic, light touch is sensed through a common mechanism involving Piezo2 channels in sensory axons.