Antioxidants are your best friend when it comes to fighting the free radical damage that pollution brings. Free radicals are nasty little suckers that go around attacking cells in your body and causing oxidative stress. Your body is pretty good at fighting them off using antioxidants of your own but over time, you get less good at it, and modern-day pollution is sky-high. (Remember when that road in Brixton broke its annual air pollution target in five days? This is why you need more antioxidants.) I really like The Ordinary Resveratrol + Ferulic Acid , while if you have more cash to splash, SkinCeuticals CE Ferulic is always popular. Or you can go straight for a vitamin C serum. Vitamin C, as well as being a powerful antioxidant, is supremely brightening on the skin and can help your face look more awake. Try The Ordinary Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F (and try saying it five times fast), or Clinique Fresh Pressed