April 2024 in “Cognizance journal” The alexandrite laser effectively reduces unwanted hair by about 75%.
January 2009 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Lasers and light treatments are now the most common ways to remove hair.
2 citations
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February 2022 in “Biology” Blue laser light reduces energy in mouse skin cells and creates harmful oxygen compounds, possibly harming the cells.
July 2023 in “Photodermatology, Photoimmunology and Photomedicine” Infrared radiation can cause skin aging and cancer at high temperatures but may have therapeutic benefits at controlled levels.
9 citations
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March 2005 in “Aesthetic surgery journal” The long-pulse alexandrite laser effectively removes hair permanently.
9 citations
,
November 1999 in “Annals of Plastic Surgery” Ruby laser hair removal does not cause increased cell growth in the skin.
35 citations
,
December 2014 in “Lasers in surgery and medicine” Red light promotes hair growth by directly stimulating hair cells and improving cell communication.
3 citations
,
September 2023 in “Journal of Photochemistry and Photobiology A Chemistry” April 2026 in “Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy” 54 citations
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November 2014 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Combining LFQS and IPL is more effective and faster for treating melasma than LFQS alone.
January 2026 in “Inflammation and Regeneration” Two-photon microscopy improves skin imaging but faces safety and cost challenges for clinical use.
Laser diode light boosts hair follicle cell growth and certain gene expressions.
15 citations
,
July 2019 in “Lasers in surgery and medicine” The erbium-glass laser effectively promotes hair regrowth in alopecia areata.
3 citations
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July 2003 in “PubMed” The research found a way to measure hair surface changes by analyzing how light reflects off of it, and determined hair cuticle angles vary by hair length and color.
March 2024 in “Medical lasers” Multiple-wavelength radiation helps hair grow by boosting early hair follicle development.
4 citations
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March 2019 in “Journal of Pure and Applied Microbiology” A 940nm laser effectively reduces inflammation in rat joints.
March 2026 in “Quality in Sport” Red light therapy can boost athletic performance and aid healing.
December 2025 in “Medical Lasers” The laser treatment increased hair density in men with hair loss.
63 citations
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January 2006 in “Journal of cosmetic and laser therapy” The pulsed infrared diode laser is effective for treating hair loss in alopecia areata.
April 2019 in “Archives of aesthetic plastic surgery” Higher fluences in 808-nm diode laser treatments are more effective for axillary hair removal.
Low-level laser therapy is a safe, painless method that effectively treats acne and improves skin without post-treatment care.
43 citations
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September 2017 in “Lasers in Surgery and Medicine” LED light therapy may help hair growth by activating certain cell pathways.
1 citations
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January 2002 Hair shine can be measured by how it reflects laser light.
September 2025 in “Journal of lasers in medical sciences” Thulium laser therapy is a safe and effective short-term treatment for hair regrowth.
2 citations
,
March 2025 in “PNAS Nexus” Raman spectroscopy can detect radiation exposure in mouse hair with high accuracy for up to 7 days.
21 citations
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March 2020 in “Journal of lasers in medical sciences” Diode laser hair removal is effective and safe, but side effects vary by ethnicity and treatment number.
24 citations
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May 2017 in “Journal of Cosmetic and Laser Therapy” The laser scanner device was more effective at increasing hair density than the laser hat in treating androgenic alopecia.
The 1550 nm fractional Er:Glass laser improved hair regrowth in patients with androgenic alopecia, but didn't significantly change collagen type I, skin fibroblasts, or macrophages. More research is needed for optimal results.
April 2026 in “Biosensors” Red light increases hair follicles and ATP in mouse skin.
January 2003 in “Research Portal (King's College London)” Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.