Reviva Labs Collagen Serum Is A Powerful Skin Care Product That Helps To Firm, Nourish And Improve The Appearance Of Delicate Facial Skin. Made Primarily With Naturally Derived Ingredients, This Serum Is Free Of Harsh Chemicals That Can Irritate Or Damage The Skin. This Product Does Not Contain Parabens. Each Bottle Of Reviva Labs Collagen Serum Contains 1 Fl. Oz. Of Product.