Purchase January 2023 philosophy mega-size when hope is not enough 5.7 oz. serum most popular antiaging serum in a mega size! When hope is not enough serum is a lightweight, antioxidant-rich serum that helps improve the appearance of skin firmness and helps reduce the appearance of fine lines and wrinkles. Ideal for all skin types, this fluid gel is enriched with firming and hydrating properties that help revitalize dull, lifeless complexions.