Sanex Dermo Re Vital Roll On. Your skin is alive. It is protected by its own defense mechanism which keeps it healthy. When its weakened for example by hard water, or washing too frequently our skin becomes drier and less supple. To keep skin healthy its important to use products designed to stimulate the skin’s natural defenses in order to rebalance them. To keep skin healthy, body care products should respect the skin’s natural defense barrier. That’s why Sanex Dermo active formulations work with the skin to restore moisture and pH levels to protect your natural defenses.