The iconic Double Serum is available in a light, imperceptible texture, with proven results on signs of aging. Developed by Clarins Research, its unique dual formula combines 21 powerful plant extracts that help boost the 5 vital functions of the skin - regeneration, nutrition, oxygenation, hydration, protection - and act on signs of aging. Its dual texture - evanescent oil and fluid gel - leaves an immediate "barely there" finish and a pleasant fragrance with fruity, floral, fresh and refined notes.