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Bracelet warns sunbathers if they are burning their skin

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A bracelet that warns sunbathers when they are in danger of burning their skin has been developed by scientists.

Researchers at the University of Strathclyde have created a UV sensitive yellow bracelet that rapidly turns pink when it has had too much exposure to the sun.

The device contains an acid-release agent, which is decomposed by sunlight, and an ‘intelligent ink’ dye that responds to pH levels.

Professor Andrew Mills, who led the research, said: ‘Skin cancer is a huge health problem in the UK and many other countries and sunburn is behind it in many cases.

‘This device is a straightforward means for people to keep themselves safe while they enjoy the sun.’

Researchers say different agents could be used to make the device suitable for all skin types, which can react differently to ultraviolet light.

The bracelet also changes colour to brown when it is time for the user to reapply sun cream.

Professor Mills hopes the device will be available to buy within the next few months.

The research has been published in the latest edition of Chemical Communications.

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