A research team led by RMIT University in Melbourne, Australia, has developed paper-based UV sensors that could help people avoid sun damage and manage vitamin absorption…. A personal struggle with Vitamin D deficiency led Professor Vipul Bansal to develop the color-changing sensors that come in six variations to reflect the range in human skin tone, reports RMIT. “We can print our ink on any paper-like surface to produce cheap wearable sensors in the form of wrist-bands, head bands or stickers for example,” Bansal said. Knowing what a healthy amount is for you depends on understanding your personal classification, from Type I to VI, as each has very different solar exposure needs.
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