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Glossary Ultraviolet A

long-wavelength ultraviolet light that penetrates deeply into the skin

Ultraviolet A (UVA) is a type of ultraviolet radiation with wavelengths ranging from 320 to 400 nanometers. It penetrates the skin more deeply than UVB, contributing to skin aging and long-term skin damage, and is also implicated in the development of some skin cancers. UVA is commonly encountered in sunlight and is also used in tanning beds.

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research Ultraviolet Radiation in Wound Care: Sterilization and Stimulation

106 citations , July 2013 in “Advances in wound care”

This review discusses the potential of ultraviolet (UV) radiation technologies in wound care, highlighting their antimicrobial properties and risks of DNA damage, but reports no new clinical findings.

research A Novel In Vivo Model for Evaluating Agents that Protect Against Ultraviolet A-induced Photoaging

26 citations , April 1998 in “Journal of Investigative Dermatology”

This study in transgenic mice found that the combination of SPF 15 sunscreen and a UVA filter provided strong protection against UVA-induced elastin promoter activation and thus may reduce photoaging.

research Review of the current understanding of the effect of ultraviolet and visible radiation on hair structure and options for photoprotection

22 citations , July 2004 in “International Journal of Cosmetic Science”

This article reviews the impact of UV radiation and visible light on human hair structure and summarizes protective strategies, reporting no new clinical results.

research Weathering of the hairless scalp: a study using skin capacitance imaging and ultraviolet light-enhanced visualization

19 citations , July 2009 in “Clinical and Experimental Dermatology”

This article discusses how the balding scalp's exposure to UV and near-infrared light may accelerate aging, with changes detectable under ultraviolet light; it presents no new clinical findings.

research Identification of ultraviolet B radiation-induced microRNAs in normal human dermal papilla cells

18 citations , July 2014 in “Molecular Medicine Reports”

This study found that UVB radiation significantly alters miRNA expression and induces cytotoxicity and apoptosis in normal human dermal papilla cells.

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community Evolution theory: AGA is your body trying to reduce the risk of prostate cancer by exposing your scalp to more UV

in Research/Science 9 months ago

Androgenic alopecia (AGA) might have evolved to reduce prostate cancer risk by increasing UV exposure to the scalp, but this theory is debated. Treatments like minoxidil and finasteride are used for AGA, though the exact causes and evolutionary reasons for hair loss are unclear.

community What About Phytosterol Alternatives - Rice Bran Oil - Natural DHT Blockers

3 upvotes 2 years ago

The conversation discusses natural DHT blockers like rice bran oil, which may reduce 5α-reductase activity similarly to Minoxidil and Dutasteride. One user argues that finasteride is more reliable and effective than natural alternatives.

community The Health Benefits of Head Hair

in Research/Science 19 upvotes 11 months ago

Hair provides protection against head trauma, reduces skin cancer risk, helps remove heavy metals, and aids in wound healing. The conversation emphasizes the health benefits of maintaining head hair beyond cosmetic reasons.

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