TLDR UV treatment can damage hair, so protection is advised.
The study investigated the effects of ultraviolet (UV) irradiation on hair in 20 patients with vitiligo undergoing UV treatment, compared to 10 healthy volunteers. It was found that UV exposure led to significant physical changes in hair appearance, with group 1 (psoralen plus UVA) showing more reduced hair follicle thickness and disorganized perifollicular collagen than group 2 (narrow band UVB). Transmission electron microscopy revealed nonspecific cell injury in hair follicles, particularly in group 1. The study concluded that UV treatment could damage hair, and patients should take precautions to protect their hair during such treatments.
59 citations
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January 2013 in “Annals of Dermatology” Asian hair is more resistant to UV damage due to higher lipid content.
5 citations
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March 2012 in “Microscopy Research and Technique” UVB radiation changes the chemical makeup and dries out human hair but doesn't alter its appearance or texture.
53 citations
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January 2009 in “Journal of Investigative Dermatology” UVB radiation harms hair growth and health, causing cell death and other changes in human hair follicles.
24 citations
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October 2008 in “PubMed” Excessive sun exposure damages hair, causing protein loss and color changes.
489 citations
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June 2005 in “The FASEB Journal” Human hair follicles can produce cortisol like the body's stress response system.
22 citations
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July 2004 in “International Journal of Cosmetic Science” UV radiation and visible light can damage hair, but there are ways to protect it.
47 citations
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April 2000 in “The American journal of pathology” Bcl-2 overexpression protects against UVB damage but worsens hair loss from chemotherapy.
