What it is: A potent barrier serum with a concentrated form of cell-renewing Miracle Broth for skin that's stronger, more stable and visibly soothed. What it does: Each day, exposure to environmental stressors like pollution can cause inflammation-a root cause of premature, visible signs of skin aging. With barrier-building benefits and new antioxidant power, The Concentrate is your double source of strength against these daily irritants.