iPhone 5c (blue) scratch removal

Hello everyone,

I was wondering if anyone had tips for getting rid of tiny scratches in the back plastic of an iPhone 5c. I have a cover on it but obviously something still seems to get in. The scratches, or more like 'dents' are only visible when the light hits them so not tragic, but I was hoping there would be a polish or something to polish them away. You get similar products for watch faces, I'm just cautious using something not specifically made for the type of plastic!

Any advice/ experiences would be much appreciated!