The 'heat is on.' Enjoy summer without getting burnt. Be sunscreen savvy. The sun emits different levels of radiation, with UVA and UVB responsible for sunburn and melanoma. Look for a 'broad- spectrum' sunscreen (which means it offers protection against both UVA and UVB rays). Apply sunscreen to all uncovered skin 15-20 minutes before going out, and reapply every two hours during the day, and after swimming or sweating. Be generous with each sunscreen application- use a teaspoon for your front and back torso and for each arm and leg, and half a teaspoon for the face, neck and ears. Tinted sunscreens are a great alternative to foundation for your summer holiday. Sunscreens have use-by dates so don't forget to check the expiry date and replace it if it is out of date.