| Jack Black Protein Booster Skin Serum. Your daily-dose of anti-aging defense. Contains advanced collagen-boosting peptides to fight fine lines and wrinkles. Use with a moisturizer or blend with another product, such as our Double Duty Face Moisturizer #9482 or our Post Shave Cooling Gel #9480.The silky liquid texture is readily absorbed allowing for immediate delivery of the efficacious ingredients below the skin's surface. Except for customers with oily skin, serums are not intended to provide adequate hydration when used alone. +... - Jack Black Protein Booster Skin Serum. |