Sericin powder

Sericin powder
Product definition:

Sericin is a colloidal protein coated on the outer layer of silk. Slightly yellow powder, soluble in water, ninhydrin reaction is positive.
Application characteristics:

1. The polar side amino acids such as serine and aspartic acid are very high in sericin. It is a protein with extremely rich hydrophilic groups. Since sericin has about 75% of the hydrophilic and polar amino acids, especially the content of serine, which accounts for nearly 30%, is 50 times more hygroscopic than glycerin, so sericin is very excellent as a raw material for cosmetics and chemical fiber coatings. The moisture absorption, ventilation function and anti-microbial function of the product.

2. Sericin has excellent film-forming properties on the hair, the film is shiny, and the hair feels good and elastic. It can not only prevent hair from being damaged by direct contact with chemicals, but also increase hair elasticity and shine. Sericin forms a certain strength film on the surface of the hair and can be used as a hair styling agent.

3. Sericin has excellent resistance to oxidation. It can effectively inhibit the activity of polyphenol oxidase in foods, and has very significant value for the development of additives that extend the shelf life of dairy foods.

4. Using sericin as the main raw material, it is cross-linked by a cross-linking agent to coat chemical fibers, underwear, bedding, skin-friendly products, leather and other products, which can achieve silky effects such as skin care, skin care, and comfort.

Silk fibroin powder
Product definition:

Silk powder (silk fibroin powder) is a kind of powdered polymer silk fibroin obtained by selecting silk fibroin after high-pressure degumming, processing, and then pulverizing by physical methods. The molecular weight is approximately 250,000. Tasteless, odorless, slightly soluble in water, insoluble in alcohol ethers.
Application characteristics:

(1) There are hydrophilic groups in the silk structure, so silk powder is an excellent natural humidity control factor. A thin layer of silk powder is attached to the surface of the skin, which can absorb or release water with changes in skin temperature and humidity. This has a certain effect on skin health and prevention and treatment of various skin diseases caused by moisture or dryness.

(2) The crystalline structure of silk powder can reflect part of the ultraviolet rays, and the cavity formed by its spiral structure can absorb part of the ultraviolet rays. Therefore, the silk powder and sunscreen can be used in sunscreen products with good effect.

(3) Silk powder has a special ability to retain oil, so it is more suitable for oily skin cosmetics.

(4) The structural characteristics of silk powder can help reduce the reflected light. When used in mica powder-based cosmetics, it can reduce the reflected light and make it naturally show vivid and soft colors. It is comparable to talc powder and titanium dioxide. Compared with silk powder, it has excellent air permeability, and the silk powder-containing cosmetics feel smooth after use.

Silk peptide powder

Product definition:

Silk peptide is a water-soluble polypeptide material formed by degradation of silk fibroin protein. The molecular weight is generally between 500-10000, good water solubility, white powder, ninhydrin reaction is positive.
Application characteristics:



(1) It has the effect of nourishing the skin and improving skin wound healing:

 It is clinically proven that silk peptide has a good effect on skin wrinkles, dermatitis, itching, and elimination of chloasma. Silk peptide can accelerate wound healing. Silk peptide can also prevent the skin from eroding and harming the skin by dust, paint, acid and alkali chemicals. Therefore, frequent application of skin care products rich in silk peptides can achieve the effect of beauty and prevention of various skin diseases.



⑵Excellent hair care function:

The hair care function of silk peptide is mainly embodied in the absorption and adsorption to the hair, film-forming properties, and moisture-control properties.

Compared with other hydrolyzed proteins (collagen, bone glue, gelatin, etc.), silk peptide is characterized by rich nutrition and easy absorption by hair. The absorption of silk peptide to the skin and hair mainly depends on osmosis. As the concentration of silk peptide increases, the amount of silk peptide absorbed by the hair increases accordingly. If it is damaged hair, the absorption and adsorption capacity of low molecular weight silk peptide is greater, correspondingly, the protective effect of silk peptide on hair is more obvious.

The silk peptide with a molecular weight of 500-2000 has good film-forming properties on the hair, and the film has a unique luster, and the hair feels good and elastic. X-ray diffraction method shows that the film formed by silk peptide is β-type crystal, and the film formed by silk peptide on the hair can increase hair elasticity and gloss. At the same time, it can also be used as a hair styling agent. Compare PVP, collagen peptides, starch aqueous solutions with silk peptides. Under 80% RH humid conditions, using silk peptides as a styling agent can maintain good hair style for a long time.

Hair that loses a certain amount of moisture will dry, split ends, break easily and fall off. The film formed by silk peptide on the surface of the hair can prevent excessive evaporation of water. As a natural moisture-regulating factor, it can also adjust the humidity of small spaces on the surface of the hair, making the hair soft and smooth.