Cle de Peau Beaute's best-selling serum boosts skin's suppleness and hydration while priming skin for optimal absorption of Cle de Peau Beaute skin care. Like the mind, skin is smart. The Serum leverages Skin Intelligence to support your skin's maximum ability to restore and protect itself. This product helps you respond to the good (nutrients, sleep, moisture) and bad (pollution, stress, dryness) for your best skin. The lightweight texture instantly absorbs into the skin for exceptional smoothness.