Skinceuticals Metacell Renewal B3 50ml 1.7oz Metacell Renewal B3 utilizes a patent-pending inverse aqueous emulsion to deliver a high concentration of 5% niacinamide combined with 2.5% tightening tri-peptide concentrate and 15% glycerin improve the look of early photoaging. While signs of photoaging appear at different intensities according to skin biology, lifestyle, geography, sun protection behavior, and skincare regimen, they have a multiplicative effect, creating a prematurely-aged appearance. Metacell Renewal B3 is a comprehensive daily corrective moisturizer that visibly corrects the appearance of early photoaging to re-clarify skin, reduce wrinkles, re-tighten surface elasticity, and even skin tone