My brother-in-law has never had acne since he was a teen. But now he's having a breakout. Too much stress from work, I suppose. I told him to try exfoliating daily with a washcloth and mild soap to release trapped oil, then apply pronexin. My daughter is using it and it's very effective. Unlike other acne treatments, pronexin is an all natural formula that kills acne fast and keep them away for good. She still has some left in the bottle so I told her to give it to his uncle so he could try.