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Updated: Oct 18, 2025

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Published on: August 19, 2025
Effects of visible light on mechanisms of skin photoaging
Aunna Pourang1, Aaron Tisack2, Nneamaka Ezekwe1
1Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA.
Abstract:
Human skin is not only affected by ultraviolet radiation but also by visible light wavelengths emitted by sunlight, electronic devices, and light emitting diodes. Similar to the ultraviolet radiation, visible light has been implicated in photoaging. In this review, the effects of blue light, yellow light, red light, and broad visible light are discussed in relation with photoaging. Different visible light wavelengths likely contribute beneficial and deleterious effects on photoaging by way of interaction with specific photoreceptors, ROS production, and other photon-mediated reactions. Further in vivo studies are needed to determine the mechanism and action spectrum of photoaging in humans, as well as optimal photoprotection with coverage against visible light wavelengths.
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