RESIST BHA 9 is a first-of-its-kind spot treatment specially formulated to address your most stubborn skin imperfections. The technology behind BHA 9 is indeed unique, allowing for a controlled, sustained release of salicylic acid without diminishing any of its effectiveness. In fact, you will have enhanced results without dryness or irritation! BHA 9 for Stubborn Imperfections has a pH range of 3.2-3.5. BHA 9 can do all of the following: Unclog pores with the first use. Diminish white bumps. Minimize enlarged pores. Refine and smooth skin's texture. Minimize sebaceous hyperplasia. Smooth and soften dry, rough patches. Help balance oily skin. Fade red marks from breakouts. Reduce breakouts.