Tanning can be dangerous, especially if you fall asleep on the beach while soaking in some rays. These UV-sensing wristbands will let you know when youâ€™ve had too much sun. Once youâ€™ve had your fill, they change colors to let you know when to cover up.
he bands work through an acid-releasing agent that picks up UV light. A dye responds to pH levels in the indicator. Once youâ€™ve reached a predetermined UV level, the bands change from yellow to pink. The Swedish company Intellego Technologies plans on releasing different sensitivity levels, because people react differently to UV exposure: some people can tolerate more while others can tolerate less.
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