Beaches, BBQs and parks will no doubt be full of life this weekend as Brits enjoy the well-overdue heatwave. But applying SPF the ‘right way’ shouldn’t be forgotten if you want to avoid dodgy tan lines and burnsBeaches, BBQs and parks will no doubt be full of life this weekend as Brits enjoy the well-overdue heatwave. But applying SPF the ‘right way’ shouldn’t be forgotten if you want to avoid dodgy tan lines and burns