October 2021 in “Research Square (Research Square)” A 532 nm laser helps tendon stem cells grow and become tendon-like by increasing Nr4a1 activity, which may speed up tendon repair.
The 1540nm fractional erbium-glass laser helps treat hair loss caused by hormones.
160 citations
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December 2016 in “Journal of biophotonics” Low-level laser therapy, now called photobiomodulation, is recognized for its broad medical applications and scientific backing.
57 citations
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December 2011 in “Lasers in Surgery and Medicine” Selective photothermolysis can target sebaceous glands and may treat acne effectively.
December 2020 in “Lasers in Surgery and Medicine” Laser safely and effectively removes unwanted scalp micropigmentation.
2 citations
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January 2007 in “Journal of The American Academy of Dermatology” Red and infrared light therapy improves hair growth in balding patients.
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.
22 citations
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September 2022 in “Medicina” Using two types of lasers together improves skin tone and collagen remodeling.
April 2024 in “Frontiers in cellular and infection microbiology” Blue light might help treat skin conditions by affecting the skin's bacteria.
September 2017 in “Journal of Investigative Dermatology” Photodynamic therapy can potentially remove nonpigmented hair by damaging hair follicles.
August 2025 in “Photodermatology Photoimmunology & Photomedicine” LED therapy is a promising, non-invasive skin treatment, but needs standardization and personalization.
2 citations
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March 2025 in “Archives of Dermatological Research” HEV light can harm or help skin and scalp, so safe exposure guidelines are needed.
July 2023 in “Journal of lasers in medical sciences” Red laser therapy helped regrow hair in an alopecia areata patient within 21 days.
April 2023 in “Journal of Investigative Dermatology” Both laser treatments improved acne scars similarly, but the Nd:YAG laser was safer and less painful, while the Er:YAG laser left patients slightly more satisfied.
13 citations
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April 2016 in “Journal of Dermatology” 308-nm excimer light therapy helped over a third of treatment-resistant alopecia universalis patients regrow most of their hair.
6 citations
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January 2021 in “Annals of Dermatology” 650 nm red light helps hair grow and prevents hair loss by affecting certain genes and biological processes.
2 citations
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March 2019 in “Lasers in surgery and medicine” Higher light doses cause more damage to hair follicles, predicting better hair removal results.
7 citations
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August 2024 in “Skin Research and Technology” The study's findings are unreliable due to retraction.
64 citations
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June 2009 in “Photomedicine and Laser Surgery” Excimer light effectively treats various skin diseases, including psoriasis, vitiligo, and mycosis fungoides.
47 citations
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August 2011 in “Journal of The European Academy of Dermatology and Venereology” Laser treatment increases hair density and thickness safely in women with hair loss.
5 citations
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January 2018 in “Annals of Dermatology” A 308 nm excimer laser successfully treated a boy with a rare skin condition after about a year of weekly sessions.
March 2026 in “Mendeley Data” March 2026 in “Mendeley Data”
675 nm laser therapy effectively improves hair growth in Indian patients with androgenetic alopecia.
1 citations
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June 2024 in “JMIR Dermatology” 675 nm laser therapy effectively improves hair growth and density in AGA patients.
September 2025 in “Lasers in Medical Science” August 2022 in “Dermatologic Therapy”
January 2026 in “Nature Communications” A wearable device using NIR light may help treat hair loss non-invasively.
26 citations
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April 1999 in “Dermatologic Clinics” The long-pulsed alexandrite laser is effective for hair reduction, particularly for light-skinned individuals with dark hair, but caution is needed for darker skin.
20 citations
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December 2003 in “Journal of Cosmetic and Laser Therapy” An 800nm diode laser safely and effectively reduces hair for about 8 months, with most patients satisfied and few side effects.