DAMIEN SMITH: Ha, ha! Zinc paste has been used for a thousand years—not just the Australian cricket team and Shane Warne. Then came the Dark Ages and the mediaeval times, when there must have been no sun, because there were no records. But the 1900s saved us again. The simple story about Coco Chanel: she was on a boat in the Mediterranean in 1923 and she got too much sun. She came off the boat and her look symbolised health, and people wanted her glow. So it took off, sunbathing. But actually the origin of sun cream and the sun protection factor (SPF) rating system was by the founder of L'Oréal, Franz Greiter, who had the Piz Buin mountain product. He actually designed it for the back of his neck, and it was an SPF of 2. 