Probably the most useful things you can do are to apply hot compresses to pustules and cysts and never to pick or squeeze pimples. Playing with or popping pimples, no matter how careful and clean you are, nearly always makes bumps stay redder and bumpier longer. People often refer to redness as “scarring,” but fortunately it usually isn’t in the permanent sense. It’s just a mark that takes months to fade if left entirely alone.

Here are a few informative links.