What It Is: The perfect pairing of skin vitality with targeted environmental protection. Part of the Vitality Collection, potent #2 The Serum fortifies skin against the appearance of oxidative stress while cultivating a healthy brilliance and even tone. Skin appears more supple, firmer, and uplifted. A revitalizing suite of formulations that simultaneously delivers superlative skin rejuvenation and intensive Skin Identical antioxidant nourishment. Youthful vibrancy and radiance reawakened. Every unique RATIONALE Ritual is comprised of Formulations from each of our Essential Six Collections. What It Does: Delivers sophisticated antioxidant protection. Tone and texture are refined as natural radiance is reanimated. Firmness and elasticity are enhanced as collagen is supported. Supreme skin suppleness is realized. How to Use: Smooth 2-3 drops gently over the face, neck, décolletage, and backs of hands. Follow with your RATIONALE Essential Six formulations for the day. Signature Complexes: Our proprietary Skin Identical Antioxidant Complex elicits a brightened, even tone, enhances skin firmness, and refines texture. Signature supporting Antioxidants provide protection from free radicals and external aggressors, such as pollution and environmental stress. Our sophisticated humectants deliver deep hydration into the skin to a luminous effect. Results*: Hydrated +95% Brighter and More Radiant +84% Even Toned +79% *After 56 days 1 oz./ 30 mL