The device is quite simple to use. This does not require an application on your smartphone or additional accessories. It is enough to put a sticker on your skin and watch the color change.
When applied to the skin, the sticker looks like this:
It consists of two circles marked with special ink. Under the influence of the sun, parts of the outer circle change color.
When the sticker is in the sun, the inner circle immediately becomes purple. And its shade depends on the intensity of ultraviolet radiation.
The outer circle consists of three parts, which gradually change color from violet to bright pink.
Thus, the device helps reduce the risk of getting an increased dose of ultraviolet. That allows you to get the necessary amount of vitamin D and safely enjoy sunburn during periods of greatest solar activity.
At this stage, the sticker is designed for people with fair skin and will go on sale in the second quarter of 2018.
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