I have left with the Obagi system for about three months and I only rarely now, only the acne scar problem. The Obagi system is in three stages, a cleaning agent, salicylic acid, 2-toner, which also salicylic acid and 3 of the BPO contain benzoyl peroxide. I wanted to try using Retin A for scars, but I’m afraid to get it with salicylic acid mix. . . . Any help? or maybe the situation?