WHAT IT IS From the Clarity Collection. This sophisticated skin-refining serum recalibrates the skin's pH balance for a more even, smoother appearance. As skin rejuvenation is optimized and irritation calmed, skin looks and feels immediately renewed, resurfaced, and deeply luminous. 1 fl oz. Made in Australia. WHAT IT DOES #5 The Serum helps recalibrate the skin's pH to a youthful acidic level resulting in a more even appearance. Hydration levels are augmented to aid in visibly smoothing fine lines for a radiant appearance. HOW TO USE IT Smooth 2-3 drops gently over the face, neck, décolletage, and the backs of hands. ACTIVE INGREDIENTS A proprietary Complex of Organic Hydroxy Acids refines skin's clarity by recalibrating skin to a youthful, acidic pH level. A powerful, unique profile of Botanical Extracts promotes a refined texture and tone, enhancing brightening effects to reveal more radiant skin. A signature hydrophilic delivery system supports and amplifies natural hydration reserves in the skin. Cosmetics - Treatment Brand > Rationale > Saks Fifth Avenue > Barneys. Rationale.