This bar is worth it’s weight in gold! It has proven itself time and time again on my clients who have stubborn acne. By itself you can leave it on the skin up to 5 minutes once a week as a treatment mask, it can be used with a Clarisonic brush, and it balances pH (which is crucial to repairing acneic skin because most over-the-counter products tend to dry the skin and compromise it’s natural moisture barrier, thereby creating a breeding ground for acne) . Acne usually isn’t solved by using one product, so for my clients I pair this product with intensive clarity treatment 0.5% pure retinol to actively fight the proliferation of acne breeding bacteria in the skin, while calming inflammation, and speeding up the process of fading post-inflammatory hyperpigmentation. I also like to through in Clearskin moisturizer because it is antibacterial so it reduces bacteria without ca using any unwanted flaking or sensitivity.