As soon as the mercury rises, we need dig out day creams that contain an SPF. Don't wait for a blazing hot day or seaside getaway - 5 to 10% of UV rays penetrate cloud cover! So as soon as spring has sprung, religiously protect your skin. Even if you're just planning an al-fresco lunch, keep a travel size sunscreen in your bag to apply at the first hint of sunshine. Day creams that contain an SPF form a protective barrier that helps to: - stop UV rays from attacking cells in the dermis, - prevent sunburn, - slow down skin ageing, the sun being culprit No.1 - avoid the appearance of sun-induced age spots, - reduce the risk of getting skin cancer.