Sleeping mask covers the stratum corneum of the skin and provides moisture for it. At the same time, it also has good film-forming property. On the basis of skin care night cream, a little film-forming polymer compound is added, which has certain film-forming "closed" property and can keep the skin flowing out of water. This kind of mask is a cream dosage form that is more convenient for the skin to absorb the effective ingredients.
The principle of sleeping mask: use a thick cream dressing, block the contact of facial face skin and air, block the evaporation of skin moisture, increase the humidity of corneous layer and soften it;The temperature of the epidermis increases so as to expand the pores, which is conducive to the smooth absorption of nutrients.After the skin temperature rises, the blood circulation speeds up, so that the nutrients infiltrating into the skin can be spread deeper and wider, and the nutrients can be replenished quickly. The moisture on the surface of the skin that cannot evaporate will be retained in the epidermal layer, and the moisture on the epidermal layer will be full, and the skin will look more smooth and tight, and the fine lines will become shallow and light, while the whiteness and brightness will be significantly improved.