With the onset of January blues, the temptation to book a sun holiday is overwhelming. If your travel plans for 2016 include taking in some sunshine, the latest product from L'Oréal could come in very handy. The French skincare giant has introduced a 'stretchable sensor' that will change colour when you've had too much sun. The disposable patch can be worn for five days and by hooking it up to your phone, you can see how much UV damage your skin has been subjected to. The Tech Times reports that the 'My UV Patch' made its debut at the Consumer Electronics Show in Las Vegas this week. Image via L'Oréal Speaking about the new innovation, Guive Balooch, global vice president of L'Oreal's Technology Incubator said: "The key was to design a sensor that was thin, comfortable and virtually weightless so people would actually want to wear it. "We're excited to be the first beauty company entering the stretchable electronics field and to explore the many potential applications for this technology within our industry and beyond". Reports say the patch will be available in more than 15 countries and there's no confirmation yet on the cost.