Our skin is burdened by dust, dirt, environmental pollution and chemical raw materials contained in cosmetics every day, so the first layer of protection of the skin is particularly important. The sebum film present on the epidermis of the body is the natural barrier of our skin. The sebum film is emulsified by water. It is a film formed by the oil secreted by the sebaceous glands, the sweat secreted by the sweat glands, and the cutin of the stratum corneum. . The sebum film is not only the natural barrier of the skin, it also plays important physiological functions for the entire skin and even the entire body.
Who has touched the "natural barrier" of our skin!