A Swedish company called Intellego Technologies is set to commercialize a special wristband, much like the kind wrapped around your wrist at concerts and music festivals, that can alert its wearer when it's time to get out of the sun so as to avoid burning or potentially carcinogenic sun damage.
The wristband works through an acid-release agent that picks up UV light, and a dye that responds to pH levels in the indicator, starting out yellow and turning pink as exposure time goes on. Because different complexions can tolerate sun exposure more or less than one another, the wristbands will be offered in several different options of responsiveness.
Commercialization and mass production are currently in the works for the disposable UV dosimeter technology bands, which are projected to be available sometime next year. (Hopefully in time for summer!) [DailyMail]
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