【Introduction】
Silk powder is a powdered product milled from high-purity Silk Fibroin obtained after silk degumming.
【Chemical Properties】
1、There are hydrophilic groups in the structure of silk powder,that are an excellent natural moisturizing factor. A very thin layer of silk powder is attached to the surface of the skin, and it can absorb or release water according to the changes in the temperature and humidity of the skin.This has a certain preventive and therapeutic effect on skin health and various skin diseases caused by dampness or dryness.
2、The crystalline structure of silk powder can reflect part of ultraviolet ray, while the cavities formed by its spiral structure can absorb part of infrared ray, so combining silk powder with sunscreen agents in sunscreen products can enhance the sun protection effect.
3、Silk powder has a unique ability to retain oil, similar to but superior to white clay, making it suitable for cosmetics designed for oily skin.
4、Silk powder helps reduce reflected light due to its structure. When used in mica-based cosmetics, it reduces reflected light and allows for a natural, realistic, and soft color to emerge.
5、Compared with talcum powder and titanium dioxide, silk powder has excellent breathability, therefore cosmetics containing silk leave the skin feeling exceptionally smooth and refreshing after using.
6、Silk powder also has some anti-allergic properties. Some users have reflected that cosmetics containing silk has a certain role in the prevention and treatment on wool allergies.
【Advantages】
1、It is produced with high quality silk raw materials. The production and sourcing of the raw materials are environmentally friendly and traceable.
2、Silk powder is a high molecular weight protein, with a molecular weight of about 20kDa or more. The production process is strictly controlled to ensure the absence of biological impurities and high biosafety.
【Grade】
Aseptic, Non-aseptic
【Packaging and Storage】
This product should be stored in a dry environment.
【Application】
The products are used as raw materials for medical device products, as well as for skin care products, sunscreen products and foundation cosmetics.
|
Direction of Application |
Application Fields |
Reference amount |
Efficacy of Silk Powder |
|
Skin Care Product |
Baby Powder |
-- |
Remove miliaria (heat rash), relieve itching, and provide lubrication. |
|
|
Mask |
~1.5% |
Insulation and Emolliency |
|
|
Moisturizing Lotion |
~3% |
It is fine, smooth, and breathable, with moisturizing and anti-radiation properties. It can enhance the adhesion of pigments and lakes. |
|
Cosmetic Poducts
|
Mica Bead Powder Based Cosmetics |
~5% |
It reduces reflected light, allowing for a more natural and realistic color to emerge, while also serve as an anti-cancer agent and a moisturizing conditioning ingredient. |
|
|
Cosmetics for Oily Skin |
Such As Foundation (cosmetic)~2% |
Make it have the function of retaining oil powder |
|
|
Creams |
~3% |
Moisturiz, whiten, increas skin elasticity and natural coloring
|
【Testing Indicators】
|
Project |
Indicators |
|
Appearance |
White or off-white powder |
|
Characteristics |
Odorless、slightly soluble in water、insoluble in alcohol and ether. |
|
Fineness μ |
Silk powder 160≤90μ ，Silk powder300≤5μ |
|
Nitrogen content,%（W/W） |
≥14.0 |
|
PH value |
5.0 - 7.5 |
|
Lose on Drying |
≤6.5 |
|
Ash%（W/W） |
≤5.0 |
|
Mercury |
≤1.0 |
|
Heavy metals,mg/kg Arsenic |
≤2.0 |
|
Lead |
≤20.0 |
|
Total bacteria, pcs/g |
≤300 |
|
Fecal Colifoms |
Not Detectable |
|
Pseudomonas aeruginosa |
Not Detectable |
|
Staphylococcus aureus |
Not Detectable |
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