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Product name Silk Peptide Powder
 Characters White powder, easy deliquescence
 Identify Ninhydrin reaction is positive
 Total Nitrogen ≥14.5%
 Average Molecular Weight 500-30000Da
 PH Value 4.5.0-6.5

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Silk peptide is a kind of water-soluble polypeptide substance by the degradation of silk fibroin protein, whose

 molecular weight is between 500 and 10000, which is white powder with good water-solubility, the ninhydrin

 reaction is positive.
(1)It has actions of natural moisturizing, nourishing skin and promoting skin wound healing.As clinically proven,

 silk peptide has good curative effects on skin wrinkle, dermatitis, pruritus, and eliminating chloasma. The silk 

peptide is non-irritant and can accelerate the wound healing. Silk peptide can also prevent the skin from the 

erosion and damage of the chemicals such as dust, coating, acid and alkali. Therefore, frequent daubing skin

 with skin care products which are rich in silk peptide can achieve the cosmetic effect and prevent a wide range

 of skin diseases.

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(2)Extremely Outstanding Hair Care FunctionThe hair care function of silk peptide is mainly reflected in the 

absorptivity, absorbability, film-forming property, humidifying and moisture retention to hair.Compared with

 other protein hydrolysate (collagen, collagen protein, gelatin protein, etc.), the greatest feature of silk pepti

de is that it is rich in nutrition and can be easily assimilated into the hair. The absorption of silk peptide to skin 

and hair mainly depends on permeation. The increase of silk peptide concentration will enhance the absorptive

 amount to silk peptide by hair correspondingly. As for the damaged hair, it has larger absorbed dose and 

adsorbing capacity, which in turn silk peptide has a more obvious repair and protection effect on hair.The silk 

peptide of which the molecular weight is between 500 and 2,000 has wonderful film-forming property on hair,

 and the film has a unique luster, while the hair feels good and elastic. X-ray diffraction method shows that the 

membrane formed with silk peptide is the β type crystallization, and the membrane formed with silk peptide on 

hair can increase the elasticity and luster of hair. Meanwhile, it can also be used as the hairspray. Comparing 

the silk peptide with PVP, collagen peptides, starchy solution, under the damp condition of 80% RH, using silk

 peptide as hairspray can keep hair in good condition for a long time.After losing certain amount of water, the

 hair will be dry, vulnerable to breaking and coming off and has split ends at the same time. The membranes 

formed by silk peptide on the hair surface can prevent water from excessive evaporation. As a natural moisturizing

 factor, it can also adjust the moisture of little space on the hair surface, making the hair soft and smooth.

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