When LG announced its curved smartphone, the G Flex, it boasted that the handset was coated with a “self-healing” material. Now someone has put the company’s claims to the test. In YouTube personality / video producer Marques Brownlee’s hands-on with the device, he checks out the self-healing coating with a number of tests. First he creates some light scratches with a set of keys. The LG G Flex essentially “heals” the scratches made. It doesn’t completely remove them, but apparently makes the marks almost invisible to the naked eye. He then carves out a deeper scratch using a knife, which “half heals,” appearing far less visible than it would on a regular phone. While it might not work exactly as advertised, LG’s new coating looks to be a pretty big step forward for the everyday durability of our phones.