Are you serious? the end of August. Why is it so far away? Well if your acne is bad then i doubt any over the counter products will work. The best i can think of is benzoyl peroxide. However, i really think that you should see the dermatologist sooner though since you want to avoid scarring at all costs. The sooner the better.
I wanted to buy this, but I have no idea if it will work, or is just another product for me to waste money and time on. Also i'm somewhat allergic to sulfur, and the cream contains 8% sulur. But I think I can use it still.