Clarins Double Serum ensures the optimal functioning of the skin's 5 vital functions and protects against premature ageing. It targets the signs of ageing linked to natural ageing and those induced by lifestyle and the environment. This complete age-defying concentrate helps to preserve your skin's youth and beauty. Benefits include diminished signs of ageing, visibly smoother and firmer skin, and a soft, comfortable, and radiant complexion. To use, turn the dial to select your preferred amount of product, mix and warm the serum in your hands, then apply to the face and neck using draining-pressure movements from the middle of the face to the sides.