Years of chronic exposure of human skin to sunlight strongly disrupts its body‑clock rhythm, according to a pioneering study led by University of Manchester, No7 Beauty Company, a member of The Boots Group, and University of Pennsylvania scientists.
The findings could explain how ultraviolet (UV) light triggers inflammation and damage in exposed skin, so-called photoageing, which breaks down its supportive structure, altering how its cells behave.
Published in the Journal of Investigative Dermatology, the study could have important implications on skin health and the design of skincare products that takes into account the time of day when they are applied.