With 5% niacinamide, ceramide complex & hyaluronic acid If your goal is healthy skin then you need to keep your skin barrier in check. The skin barrier is the first line of defence against environmental assaults and unwanted substances so it’s vital to keep it fully functioning and maintain its resilience. A compromised barrier can result in dry, dull, irritated skin and the potential for sensitivity as unwanted substances are more easily able to penetrate the skin.