Keri® Renewal™ Serum for Dry Skin is one of the only serums clinically proven to repair severely dry and damaged skin, while protecting it from future dehydration, after just three days of use. This triple-action patented formula creates a protective barrier for the skin. It contains a unique combination of polyhydroxy acids to exfoliate, urea to soften and humectants to lock in moisture--a combination never-before available to consumers. Serum is available at mass market retailers nationwide.