This serum combines a high concentration of niacinamide (vitamin B3) with zinc salt of pyrrolidone carboxylic acid to purify and refine the complexion. Perfect for those with sensitive skin. What it does Helps reduce the look of enlarged pores Refines the appearance of uneven texture Helps balance excess oil production Purifies congested skin PH LEVEL:Formula pH Level: 5.00 - 5.60 All of our formulas are developed to be pH appropriate to support skin health and ensure optimal potency. Our mission is to create clinically-effective, biocompatible skincare formulated with both potent natural ingredients and advanced synthetic ingredients. Our products utilize efficacious levels of active ingredients, are pH level appropriate, and are thoroughly tested for safety.