CES 2016: L'Oreal unveils super-thin smart skin patchL'Oreal's skin patch will be launched in 16 countries including the UK this summer Beauty giant L'Oreal has unveiled a smart skin patch that can track the skin's exposure to harmful UV rays at the technology show CES in Las Vegas. The product will be launched in 16 countries including the UK this summer, and will be available for free. It contains a photosensitive blue dye, which changes colour wh
