Are your Apple Watches and iPhones seemingly duller than when you first bought them? There may be a simple trick that could make them look essentially new.

Many recent flagship iPhones and Apple Watch models are available with a stainless steel chassis. And if you own a silver-colored device, it may be more prone to micro-abrasions and scratches.

That’s because color options like Space Gray or Gold actually have a coating in those colors. That coating helps protect against scratches that can dull your iPhone’s…