Avoid the sun during the hottest part of the day, between midday and four o’clock in the afternoon. Re-apply sun cream every two hours and every time you go in the sea. Gently dry off after swimming, as water droplets magnify the effect of UV rays. Wear a wide-brimmed hat and sunglasses with a UV filter to protect your eyes. Be careful about rays which can bounce off the sand and the water, you can still get burnt this way under a parasol or hat. Pay particular attention to sun protection at higher altitudes. At 1500 metres above sea level, 20% more UVB rays reach the earth.Photo: Garnier Ambre Solaire