It is a silky, weightless, moisture-enhancing treatment that optimizes skins capacity to attract and retain hydration, leaving it soft, plump, and youthful-looking. Design house: Murad. Series: Hydro-Dynamic Quenching Essence. Gender: Unisex. Category: Skin Care. SubType: Balms & Treatments. Size: 1 oz. Barcode: 767332808864. Hydro-Dynamic Quenching Essence by Murad for Unisex - 1 oz Treatment.