You've finally cleared that annoying pimple, but now you're staring at a mark that just won't go away. Is it a scar? Or something else? If you're confused, you're not alone. This is one of the most common questions people ask when dealing with post-acne marks. Here's the thing: what you're seeing might not be a scar at all. Many people mistake hyper-pigmentation for scarring, and vice versa....