Silk Peptide

Silk peptide is a more refined product,its particle size can make it penetrate into the skin and hair,so that it has a higher added value,and can improve the appearance.After drying and turning into a protective crystalline film (less viscous than collagen or keratin),the gloss,elasticity and smoothness imparted to the hair become obvious.After the silk peptide penetrates the skin,it helps to retain moisture while providing an attractive luster.Hydrolyzed silk peptides can be used in a variety of products,such as shampoos,conditioners,hair care,shower gels,body lotions,cleansers,toners,makeup foundations,lipsticks,mascaras,and color cosmetics.

Item	Specification	Test result
Characteristics	White color powder Soulble in water	White color powder Soulble in water
Nitrogen（%）	≥14.5	15.2
Weight Loss on drying（%）	≤5	2.4
Residue on lgnition（%）	≤4.5	2.6
Pb	≤0.5	0.12
As	≤0.5	0.03
Hg	≤0.2	0.02
PH Value	4.5-7.0	5.6
Pathogenic Bacteria	Can`t be detected	Not detected

★What is Silk Peptide?

Silk Peptide is a water-soluble mixture of short to medium-chain peptides derived from the hydrolysis of natural silk fibroin

★What are the main benefits of Silk Peptide in skin care?

First, it has strong water-binding capacity, helping the skin retain moisture, reduce dryness, and maintain a hydrated state .

Second, it forms a lightweight, breathable film on the skin surface, enhancing skin softness and smoothness . Third, its amino acid composition is close to the skin’s NMF, which helps maintain skin barrier comfort and reduce tightness.

Additionally, some specific silk peptides (such as 27P peptide) can promote the synthesis and ordered deposition of type I collagen, achieving anti-aging effects without causing inflammation or fibrosis .

★Can Silk Peptide be used in hair care products?

Yes, Silk Peptide is very suitable for hair care . It can attach to the damaged parts of the hair shaft, repair hair damage, reduce roughness, and improve hair manageability .

★Is Silk Peptide safe to use? Are there any side effects?

It is for external use only; do not ingest.

For sensitive skin or special populations, it is recommended to conduct a skin sensitivity test before use

★What is the recommended addition concentration of Silk Peptide in different products?

Daily skin care products (creams, lotions): 0.5%-2.0%;

Sun protection products: 0.5%-1.0%;

Shaving products: 1.0%-2.0%;

Products for dry skin: 1.0%-2.0%;

Hair care products: 0.25%-0.5%.

★What should be noted when formulating with Silk Peptide?

Avoid mixing with strong oxidants or heavy metal ions to prevent chemical reactions

It is recommended to consult skin care professionals or chemists to ensure compatibility with other ingredients .

★What is the difference between Silk Peptide and raw silk powder?

Raw silk powder has high molecular weight, is difficult to dissolve in water, and only stays on the skin or hair surface, making it hard to be absorbed. Silk Peptide, after enzymatic or acid hydrolysis, has smaller molecular weight, good water solubility, can penetrate the skin cuticle and hair cuticle, and is easier to be absorbed by the skin and hair, thus exerting better moisturizing and nourishing effects

★What is the solubility of Silk Peptide for cosmetic formulation?

The solubility of silk peptide for cosmetic formulation is excellent in water, and has certain compatibility with specific organic solvents and cosmetic ingredient systems.

★Which well-known cosmetic brands use Silk Peptide ?

Kanebo SENSAI (Japan)

This Is Silk (UK)

Sungboon Editor (Korea)

Chanel (France)