I had pimple scars. I’m 15 yrs .old they were just few but some are kinda big. what are the ways in cleaning them? can you give some suggestions and tips. i know that it will also take time..thanks.

I have had acne problems for years and have tried many over the counter products. Yet my acne scars are still visible even though my skin has smoothed out over the years. Any help is appreciated!! : )
Thanks!