I was one of those teenagers plagued with terrible acne. With enough perscriptions , it began clearing up. Now the only visible sings are the scaring that was left behind. Is there any easy remedy for this as well?

Dermabrasion... but its going to be expensive. In a nutshell the effectively sand your skin down that over a period of treatments can reduce scars and other blemishes.

http://www.webmd.com/healthy-beauty/dermabrasion-21085

Lemon juice