Colour Change UV Beads

Colour your world with these amazing beads! They detect ultraviolet (UV) light by changing colour, from off-white to either: purple, blue, orange, red, or yellow. The stronger the ultraviolet radiation present, the quicker the colour change and the deeper the colour. Some super solar magic! Once indoors and away from the sun's UV light the beads change back to off-white. Why not make a bracelet or key ring that'll tell you when to slop on the sunscreen!?

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• 250 Beads in a pack with instruction sheet.

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