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Impact of Long Wavelength Ultraviolet A1 and Visible Light on Light-Skinned Individuals.

08:00 EDT 25th July 2019 | BioPortfolio

Summary of "Impact of Long Wavelength Ultraviolet A1 and Visible Light on Light-Skinned Individuals."

Solar radiation is known to be a major contributor to the development of skin cancer. Most sunscreen formulations, including those with broad spectrum, offer minimal protection in long wavelength ultraviolet A1 (UVA1; 370-400 nm) and visible light (VL; 400-700 nm) domain. There is limited information regarding the impact of this broad waveband (VL+UVA1, 370-700 nm) on those with light skin. In this study, ten healthy adult subjects with Fitzpatrick skin phototypes I-III were enrolled. On day 0, subjects' lower back was exposed to a VL+UVA1 dose of 480 J/cm . A statistically significant increase in erythema immediately after irradiation compared to subjects' baseline non-irradiated skin was observed. Clinically perceptible erythema with VL+UVA1 is a novel finding since the erythemogenic spectrum of sunlight has primarily been attributed to ultraviolet B and short wavelength ultraviolet A (320-340 nm). The results emphasize the need for protection against this part of the solar spectra and warrant further investigation. This article is protected by copyright. All rights reserved.

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This article was published in the following journal.

Name: Photochemistry and photobiology
ISSN: 1751-1097
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