It is a kind of powdery high molecular protein with a molecular of 100,000, which is no taste, no smell, and is micro-dissolved in water, but not in ethanol. For making the silk cosmetics, the fineness of silk powder is generally between 1-100 µ, if the grain size is too big, the smoothness of silk powder shall be poor, and give people the feeling of crude, but it would spoil the structure of natural silk material if the grain size were too fine. Since the surface gloss of silk is caused by the[...]

Silk protein can hydrolyze into the intermediate, which has relatively small molecular weight and can pass semi-endosis. This intermediate is called silk peptide, and can be condensed and desiccated into powder of silk peptide. The silk peptide in large molecular weight has a good membranate character, which gives the hair natural gloss and elasticity to let the hair easy dressing and making up. The silk peptide of low molecular weight is easy to be absorbed by skin, and to be permeated to the inner[...]

The film formation of Silk amino acid is lower than that of silk peptide, but its permeability is higher than that of Silk peptide. The single serine, which is rich in Silk amino acid, is the main amino acid in NMF, and is the previous substance of Ceramide. The construction of serine is similar to that of AHA, is the natural product of BHA and has no any stimulation. The single threonine, leucine, tryptophan, cystine in Silk amino acid have the function of skin-aging prevention, hair-growing and[...]

Sericin is refined from silkworm body (spun silk gland), pod (pod shell,watt silk) and silk. There are 18 kinds of amino acids in sericin, among which, serine and aspartate have the highest content. Besides, it has the other amino acids necessary to human body, so it is an excellent protein. Because in sericin, about 80% amino acid has hydrophilic lateral group, about 1/3 of which is sericin whose water absorption is increased by 50 times compared with glycerin. Sericin, as the raw material of cosmetic,[...]