University of Manchester May 6 2026 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