Another study, by skin experts at Boots, found even a few hours sitting in a car in April resulted in skin damage linked to ageing.
Trevor McMillan and Sarah Allinson of the Lancaster University have shown that low dose UVA, equivalent to a British autumn day, causes up to a 50-fold increase in the expression of certain genes involved in photoageing - premature ageing of the skin from exposure to UV radiation.
Professor John Hawk, an Emeritus Professor of dermatological photobiology and UVA expert, said: "We believe up to 90 per cent of the visible signs of ageing are due to the sun's ultraviolet radiation and more than 95 per cent of these are known to be UVA rays.
"What's needed is a step-change in awareness of the damaging effects all year round, not just during summer holiday season."
Source-ANI