Excellent overall health product, especially for acne control and blackheads. I have seen a gradual improvement in the condition of my skin with frequent use, have always had acne problems since adolescence and have used several topical acne products that have not had a positive effect. With Zinc at a concentration of 30mg, however, my face is cleaner, less oily and healthier looking. This concentration is ideal for my treatment. I noticed that my immunity has improved as well, as I hardly get a cold anymore. The product is also effective for hair health by reducing grease, controlling hair loss and giving more strength and vitality. I started using L-OptiZinc a few months ago, and I want to keep using it every time, it really was a fantastic discovery. About the brand, Now Foods is one of the best in the market and one of the few that sells 30mg zinc with copper in its composition. This was my purchase on the Evitamins website, I am quite satisfied with the price found here. It helps me a lot to control my moderate acne. I recommend to everyone who has the same problem. It is a super ally for health, acne and immunity. Improves skin from the inside out.