Treat leftover scars with exfoliation. Don't let hyper-pigmentation and scarring from cystic acne get you down. Instead, add a few exfoliating acids to your skincare arsenal. According to Talakoub, alpha hydroxy acids and salicylic acid work wonders at lightening and removing the scars left behind by the stubborn bumps. You can also incorporate ingredients like retinol or vitamin A to accelerate cellular turnover and expedite the process. Be sure to do so in moderation (once or twice a week) and go heavy on the SPF (as these ingredients make skin more sensitive to UV rays). Pick: Go-To Exfoliating Swipeys ($35)