The golden ratio of water and oil balances skin feel and efficacy. It is more nourishing than water and more penetrating than oil, mimicking the skin's sebum film. Scientifically formulated with a balanced ratio of water and oil, it absorbs quickly and easily, without leaving a greasy feel. It penetrates deep into the skin, turning on the "lights" of the skin 4 layers of skin barrier repair and defense ingredients, creating a solid "brick wall structure" for the skin.