UK scientists have developed UV-sensitive indicators that change colour when there is a danger of sunburn.rnOver 70 000 people in the UK are diagnosed with skin cancer each year and sunburn is a contributing factor. The signs of sunburn can take four to eight hours to develop, by which time the skin is already damaged. While there are several UV dosimeters on the market, most are unable to distinguish between different skin types. Also, they show a gradual colour change in response to sun exposure, which makes identifying the sunburn risk difficult. Andrew Mills and colleagues from the University of Strathclyde, Glasgow, have created what they claim is a 'simple, inexpensive, unambiguous sunburn indicator' that can be tuned to different skin types.
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