Modern medical experiments have further proved that the protein content of silk is much higher than that of pearls. Among them, the nitrogen content is 37 times higher than that of pearls, and the main amino acid content is up to 10 times. These amino acids can be directly used for human hair, skin absorption and adsorption. That is, the outer layer of the human skin is easier to penetrate and accelerate the metabolism of the skin.

Silk fibroin contains 18 kinds of amino acids, of which glycine, alanine and serine account for about 85% of the total number of amino acids. chain, about 26 kD) of natural macromolecular fibrin.