Niacinamide is one of the most versatile ingredients in dermatology. In our Acne Control Serum, it works to build ceramides, which are the "bricks" of your skin barrier. A stronger barrier is more resistant to acne-causing bacteria and external irritants. This means that while you are clearing up your current spots, you are also making your skin tougher and less likely to break out in the future. Experience the long-term benefits of a reinforced, resilient, and clear complexion.