clarins double Serum 1.6 ounces Clarins' #1 bestselling anti-aging serum.* Two power-packed serums in one! Formulated with 21 potent plant extracts—including age-defying Turmeric—to visibly firm, smooth, and boost radiance in just 7 days.** Performance that goes further in decoding the language of youth to address all visible signs of skin aging. Inspired by the dual water and oil nature of the skin, our iconic two-phase formula delivers the perfect ratio of water soluble (hydric) and oil soluble (lipidic) ingredients. Once dispensed, the two concentrates combine together into one powerful serum that easily absorbs into the skin and effectively targets all visible signs of skin aging.