Silk Protein Powder

Product Overview: Premium Silk Peptide for High-End Formulations

Our Hydrolyzed Silk Protein (90% Peptide) is a highly purified, natural protein biopolymer derived from the cocoons of the silkworm (Bombyx mori). Produced through a controlled enzymatic hydrolysis process, we break down large silk fibroin fibers into smaller, bioactive peptide chains while preserving their amino acid integrity.

Unlike generic silk powders that often present a yellowish tint or distinct odor, our proprietary purification technology ensures a Snow-White Appearance and a Neutral Odor profile. This makes it an ideal choice for high-end cosmetic formulations—such as white creams, clear serums, and fragrance-free lotions—where aesthetic purity is paramount.

With a protein content exceeding 90%, this powder offers superior cost-performance compared to liquid silk amino acids (typically 1-5% solids). Its low molecular weight distribution ensures dual functionality: penetrating the hair shaft for repair and forming a protective, breathable film on the skin surface for moisture retention.

Why Choose Our 90% Silk Protein?

• High Purity (≥90% Assay): Concentrated active content means lower dosage requirements (0.5% – 2.0%) for visible results.
• Superior Aesthetics: Guaranteed white to off-white powder that will not discolor your final product formulation.
• Odorless Profile: Deodorized processing ensures no interference with your product’s delicate fragrance system.
• Instant Solubility: Dissolves completely in water at room temperature, simplifying the cold-process manufacturing workflow.
• Direct Manufacturing: Sourced and processed in our own facility, ensuring full traceability from cocoon to powder.

Specifications & Quality Parameters

The following parameters represent our standard export grade (Cosmetic Grade). Each batch is tested via Kjeldahl Nitrogen Determination to ensure protein content compliance.

Note: A full Certificate of Analysis (COA), MSDS, and TDS are available upon request. We guarantee batch-to-batch consistency for viscosity and color metrics.

Mechanism of Action: Why It Works

To understand the efficacy of our Hydrolyzed Silk Protein, it is essential to look at its biochemical structure. Silk protein is naturally amphoteric and shares a high degree of homology with human skin and hair keratin.

Molecular Weight Strategy (500 – 2,000 Da)

Our enzymatic hydrolysis process yields a specific molecular weight distribution optimized for dual-action performance:

• Penetration (Lower MW < 1000 Da): These smaller peptide chains can penetrate the hair cuticle and the stratum corneum of the skin, providing deep hydration and repairing the structure from within.
• Film-Forming (Higher MW > 1500 Da): Larger peptides remain on the surface, forming a breathable, non-occlusive film. This film provides immediate smoothing effects, reflects light (adding gloss), and protects against environmental pollutants.

Amino Acid Profile: The Power of Serine

The silk peptide is exceptionally rich in Serine (approx. 30%), an amino acid that plays a crucial role in moisture retention. Serine is a key component of the skin’s Natural Moisturizing Factor (NMF). Its hydroxyl groups easily bind with water molecules, granting the silk powder powerful hygroscopic (moisture-binding) properties that outperform many synthetic humectants.

Key Applications in Cosmetics

Our 90% Silk Peptide Powder is versatile and widely used in premium personal care products.

Hair Care Formulations

Silk protein is renowned for its high substantivity to hair keratin. Due to its ionic nature, it adheres to the negatively charged surface of damaged hair, filling in gaps in the cuticle.

• Shampoos & Conditioners: Improves wet/dry combability, reduces electrostatic charge (frizz), and leaves hair feeling silky without being weighed down.
• Hair Masks & Serums: Penetrates the hair shaft to reinforce structural integrity, reducing breakage and split ends.
• Styling Products: Adds a natural, glossy sheen and protects hair from thermal damage during blow-drying.

Skincare Formulations

In skincare, it acts as both a humectant and a texture modifier.

• Moisturizing Creams & Lotions: Provides long-lasting hydration and a velvety, non-sticky after-feel (“Silky Touch”).
• Facial Cleansers: Mitigates the irritation caused by surfactants, leaving skin feeling soft rather than tight after washing.
• Color Cosmetics: Used in foundations and primers to promote an even skin tone and improve makeup adherence.

Formulation Guidelines for Engineers

Designed for ease of use in industrial manufacturing, our Hydrolyzed Silk Protein minimizes processing challenges.

• Dosage Recommendations:
  • Standard Daily Care: 0.5% – 1.0%
  • Intensive Repair / Treatment: 1.0% – 2.5%
  • Note: As a highly concentrated powder (90% active), lower dosages are required compared to liquid silk amino acids (typically 2-5% usage).
• Solubility & Processing:
  • Water Phase: The powder is 100% water-soluble. It should be pre-dissolved in the aqueous phase.
  • Cold Process: Soluble at room temperature, making it suitable for cold-process formulations.
  • Temperature Sensitivity: While stable, we recommend adding it during the cool-down phase (below 45°C) to preserve the bioactivity of the peptides and prevent denaturation.
• Stability & Compatibility:
  • pH Range: Stable within a broad pH range of 4.0 to 8.0.
  • Ionic Compatibility: Compatible with most cationic, anionic, and non-ionic surfactants. It works synergistically with hyaluronic acid and collagen.
  • Alcohol Tolerance: Compatible with hydro-alcoholic systems (up to 20-30% alcohol), making it suitable for toners and setting sprays.

Quality Control & Regulatory Compliance

As a responsible manufacturer and exporter, we understand that safety and compliance are non-negotiable for global cosmetic brands.

• Source Traceability: Our silk protein is derived exclusively from Bombyx mori cocoons. We maintain full traceability from the sericulture base to the final powder, ensuring no adulteration with synthetic polymers or other animal proteins.
• Safety Standards:
  • Heavy Metals: Strictly controlled (Total < 10ppm) via Atomic Absorption Spectroscopy (AAS), meeting EU and US cosmetic regulations.
  • Microbiology: Each batch undergoes rigorous testing for total plate count, yeast, and mold to ensure shelf stability.
  • Chemical Residues: No harsh solvents are used in the extraction process; the product is free from solvent residues.
• Certifications & Documentation:
  • ISO 9001:2015 Certified Manufacturing.
  • Available Documents: COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), TDS (Technical Data Sheet), and Allergen Statement.
  • Non-GMO Statement: Produced from non-genetically modified silkworms.

Packaging & Storage

• Packaging:
  • Sample Size: 1kg Aluminum Foil Bag (ziplock sealed).
  • Bulk Size: 25kg Fiber Drum with double-layer PE inner liner for moisture protection.
• Storage Conditions: Hydrolyzed Silk Protein is hygroscopic (absorbs moisture from the air). It must be stored in a cool, dry place, away from direct sunlight and heat. Keep container tightly closed when not in use.
• Shelf Life: 24 months from the date of manufacture when stored properly.

FAQ: Frequently Asked Questions

Q: Is Hydrolyzed Silk Protein Vegan?

A: No, it is not vegan as it is derived from the cocoon of the silkworm. However, it is a natural, sustainable ingredient. We can provide a “Cruelty-Free” statement confirming that our sourcing practices do not harm the silkworms during the harvesting process (depending on the specific grade requested).

Q: What is the difference between Sericin and Hydrolyzed Silk?

A: Sericin is the sticky “gum” layer of the silk, while Hydrolyzed Silk (Silk Peptide) typically refers to the processed silk fibroin or the whole cocoon protein that has been broken down. Our product is a complete hydrolysate containing both functional peptides, optimized for solubility and absorption, whereas pure Sericin is often less soluble and used for different surface applications.

Q: Does this powder have a strong smell?

A: No. Unlike lower-grade silk amino acids that can have a fishy or ammonia-like odor, our 90% Silk Peptide Powder undergoes a specialized deodorization process. It has a very mild, characteristic scent that is easily masked and will not interfere with your fragrance formulations.

Q: Can I use this in clear formulations?

A: Yes. The powder is 100% water-soluble. When dissolved at recommended dosages (0.5-2.0%), it forms a clear to slightly hazy solution, making it suitable for toners, micellar waters, and clear shampoos.

Q: Do you support factory audits or third-party testing?

A: Yes. We welcome factory audits and can coordinate with third-party testing agencies (like SGS or Eurofins) upon request for bulk orders.

Ready to Formulate?

Elevate your product line with the luxurious touch of natural silk. Whether you are developing a repairing hair mask or a high-end moisturizing cream, our 90% Hydrolyzed Silk Protein delivers the purity and performance your brand demands.