Silk liquid form silk through solidification and fibre getting porous albumen fibrer that succeed albumen, silkworm of body. More than 97% of pure silk consists of animal's albumen, contain 18 kinds of necessary amino acid of human body, silk ammonia and acid nourish the skin, increase skin cell's vigor, function of preventing the skin from wearing out ect. The slight molecule that 18 kinds of amino acid give out can be called "the sleep factor", it can make people's nerve in more stable state, promote sleep quality.