Once a week, I'll bust out this face mask. Overpriced? Probably. Necessity? Yes, because this, for some reason, is a wonderful AHA + BHA combo that doesn't turn my skin into a battlefield. When I spy a pesky white head / beginnings of acne, I'll use this and it seems to go away. Because I use this product so sparingly, it lasts me around 6 months. Personally, I respect the way Tata Harper runs her business... and secretly wish I had her life.