Cast your mind back to 2016 and you may remember a product pop up on "Shark Tank" called the Sunscreenr. The device is a specialized UV light camera that allows you to scan your skin and see ...

Most of the sunblock we use is invisible anyway. SEE ALSO: 25 people who will never forget to properly apply sunscreen ever again Sunscreenr, the sunblock detection gadget from Voxelight ...