26 citations
,
November 2019 in “Medical Science Monitor” LED light therapy boosts bone cell growth and function.
May 2026 in “International Journal of Cosmetic Science” UV radiation damages hair similar to bleaching, but double bleaching causes more severe protein degradation.
10 citations
,
March 2016 in “Toxicology and applied pharmacology” Using A132 hair dye with sunlight can cause skin damage and hair loss.
7 citations
,
September 2004 in “International Journal of Cosmetic Science” Blond hair lightens more with visible light directly, while ultraviolet light lightens it after washing by damaging other hair parts.
134 citations
,
September 2008 in “Lasers in surgery and medicine” Low fluence photoepilation temporarily removes hair by targeting the hair follicle's pigmented area without severe damage.
January 1990 in “Springer eBooks” Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.
20 citations
,
September 2022 in “Journal of Biomedical Optics” PBM helps improve cell survival in 3D tissue engineering.
3 citations
,
September 2021 in “Data in brief” Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.
70 citations
,
June 2017 in “Nature Communications” A new laser technique can precisely remove specific cell types in living animals without harming nearby cells.
21 citations
,
January 2019 in “Experimental dermatology” Light therapy using helium-neon lasers can help restore skin color in vitiligo by promoting skin cell growth and movement.
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.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
February 2025 in “Cosmetics” Blue light therapy is promising for skin and hair conditions but needs more research for widespread use.
September 2025 in “International Journal of Innovative Technologies in Social Science” Red light therapy may help rejuvenate skin and regrow hair.
39 citations
,
June 2017 in “Scientific Reports” Different lab conditions and light treatment methods change how human skin cells respond to light therapy.
24 citations
,
January 2009 in “International Journal of Trichology” Sunlight exposure ages hair, making it brittle, stiff, and dry.
1 citations
,
January 2021 in “Dermatologic Therapy” Trichobiolight effectively treats hair loss with 82.5% success.
May 2023 in “Brazilian Journal of Animal and Environmental Research” Photobiomodulation effectively treats hair loss in dogs with black hair follicular dysplasia.
April 2025 in “Journal of Biophotonics” PBM therapy improves mitochondrial function and promotes tissue regeneration in dental pulp stem cells.
April 2026 in “Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy”
Photobiomodulation effectively improves skin and hair conditions with minimal side effects.
April 2024 in “Frontiers in cellular and infection microbiology” Blue light might help treat skin conditions by affecting the skin's bacteria.
27 citations
,
January 1995 Melanin in black hair protects it from sun damage better than light-brown hair.
October 2022 in “Journal of Pharmaceutical Negative Results” Photobiomodulation therapy shows promise in treating various health conditions by using specific light wavelengths.
February 2024 in “Neurophotonics” Light therapy on the brain shows promise for treating brain diseases and improving brain function.
4 citations
,
March 2013 in “The American Journal of Cosmetic Surgery” Melanin absorbing light is necessary but not enough for effective hair removal by light treatment.
2 citations
,
August 2016 in “Lasers in Surgery and Medicine” Photodynamic therapy can remove nonpigmented hair in mice and might work for humans.
May 2026 in “Brazilian Journal of Hair Health” Bleaching damages hair the most, while dyes improve combability but still cause protein loss.
31 citations
,
February 1999 in “Dermatologic surgery” Sun exposure after laser hair removal can cause skin darkening, which is hard to treat and requires avoiding UV light.
23 citations
,
December 2001 in “Lasers in Surgery and Medicine” Permanent hair removal is hard, but using longer laser pulses at lower power might improve results.