What a. summer we've had so far. We've had heatwaves, mini heatwaves and now the Home Counties are on course for their joint driest June on record ever as we continues to enjoy the very sunny weather. With good weather at home and sun holidays booked, attention invariably turns to thoughts of boosting vitamin D levels and adding a glow to our skin. We all know that too much sun = a much higher risk of skin cancer, and we all know better than to head out for a day’s sunbathing without wearing any protection. But then there’s the question of sunscreen. What SPF should you wear? If your make-up has an SPF in it, is that enough? How often should you reapply it? Is sunscreen actually full of toxic ingredients? And what the hell does “broad spectrum” mean?