The silky liquid texture of Jack Black Protein Booster Skin Serum is readily absorbed, allowing for immediate delivery of the efficacious ingredients below the skin's surface. Features: intended to be used with a moisturizer or blended with another product, ideally any of our moisturizers (Line Smoother or Double-Duty) or Post Shave Cooling Gel highly active peptides, Matrixyl®3000 and SYN®-AKE, to improve cell communication antioxidants that fight free radical damage Renovage to lessen pigmented spots and increase moisturization 2 oz. Imported.