PCA SKIN Pro-Max Age Renewal Advanced Anti-Aging Serum with Micro Growth Factor Technology The Professional Approach to Maximum Age Renewal, Pro-Max Age Renewal Serum is clinically proven to visibly lift and firm the appearance of skin by 60%.* The patent-pending Micro Growth Factor Technology (MGF), penetrates deeper than conventional growth factors,** supporting collagen production and reducing the appearance of sagging, loss of volume, lack of firmness, and wrinkles. Brand New! Size: 0.24 fl. oz