Peptides
Hydrolyzed Keratin Powder
Where Does Hydrolyzed Keratin Powder Come From?
Kintainutri®, as a bulk hydrolyzed keratin exporter, manufactures hydrolyzed keratin powder derived from natural keratin sources such as wool. Our products are available in specifications ranging from 85% to 99% purity, supported by standardized production processes and rigorous quality control to ensure consistent quality and batch-to-batch stability. Hydrolyzed keratin has excellent affinity for the skin and provides moisturizing benefits. It can also be absorbed by the hair, helping protect against hair damage and reducing the irritation caused by surfactants in cosmetic formulations. These properties make hydrolyzed keratin a versatile functional ingredient widely used in high-end cosmetic and personal care products.
| Product Name | Active Ingredient | Form | Best-Selling Specifications |
|---|---|---|---|
| Hydrolyzed Keratin Powder | Keratin Peptides | Powder | 85%, 90%, 95%, 98%, 99% |
Hydrolyzed keratin is a mixture of small peptides and amino acids produced through the hydrolysis of keratin, with a hydrolyzed keratin CAS number of 69430-36-0. The primary hydrolyzed keratin source includes animal-derived by-products such as wool, feathers, and bovine hooves and horns. Through acid, alkali, or enzymatic hydrolysis, insoluble keratin is broken down into water-soluble peptides and amino acids.
Because hydrolyzed keratin is a complex mixture of peptides with different molecular weights, it does not have a single defined hydrolyzed keratin chemical formula. Its composition primarily consists of low-molecular-weight peptides, typically below 800 Da, along with a rich amino acid profile, particularly cystine, serine, glycine, and glutamic acid. This unique composition gives hydrolyzed keratin excellent film-forming, moisturizing, and conditioning properties.
Contact us Hydrolyzed Keratin Powder COA
How To Make Hydrolyzed Keratin Powder?
Hydrolyzed Keratin Powder Benefits
Hydrolyzed Keratin For Hair
Derived from wool and composed of polypeptide molecules, hydrolyzed keratin closely resembles the native keratin found in hair, giving it excellent affinity and compatibility with the hair fiber. It functions through two complementary mechanisms. First, it forms a protective film on the hair surface that helps shield the cuticle from UV radiation, thereby reducing photo-induced damage and protein loss. Second, certain low-molecular-weight peptides can penetrate the hair cortex and help reinforce the internal structure of the hair fiber.
Research suggests that smaller peptides and amino acids generated during keratin hydrolysis can penetrate deeper into the cortex, supporting hair tensile strength and thermal stability. These properties make hydrolyzed keratin a valuable ingredient for developing hair repair and anti-photoaging products.
Hydrolyzed Keratin For Nails
Hydrolyzed keratin is rich in a high concentration of free L-amino acids (≥83.5%); among these, sulfur-containing amino acids (such as cystine) serve as key building blocks for nail keratin synthesis. Sulfur facilitates disulfide bond cross-linking, reinforcing the nail keratin fiber network and enhancing structural strength and toughness. Simultaneously, these amino acids support the normal turnover and repair of nail matrix cells, improving nail hardness, luster, and overall health at the source. Hydrolyzed keratin significantly boosts nail hardness and resistance to breakage, alleviating issues such as fragility, splitting, and brittleness, while also enhancing nail shine and overall appearance.
Hydrolyzed Keratin For Skin
Hydrolyzed keratin is rich in cysteine; it helps replenish structural proteins and promotes the repair of the skin barrier by improving collagen structure and enhancing the binding of proteins to water molecules, thereby maintaining skin hydration and moisture-retention capabilities. When taken as an oral keratin supplement, hydrolyzed keratin combats skin aging from multiple angles by providing high concentrations of free L-amino acids and small-molecule peptides.
These amino acids participate in the synthesis of collagen and elastin, strengthening skin structure and elasticity; they act as components of the Natural Moisturizing Factor (NMF) to boost epidermal hydration; and sulfur-containing amino acids promote glutathione synthesis, thereby enhancing antioxidant defenses. Additionally, it may modulate gut microbiota, exerting prebiotic-like effects. Kintainutri® hydrolyzed keratin powder reduces wrinkles and improves skin firmness and radiance, making it a premium ingredient for oral beauty and anti-aging applications.
Hydrolyzed Keratin Powder Uses
Hydrolyzed Keratin Supplement
When taken orally, hydrolyzed keratin supplements provide high concentrations of free L-amino acids and small-molecule peptides that support the health of skin, hair, and nails. Due to their low molecular weight, they are easily absorbed by the intestinal tract and contribute to collagen and keratin synthesis, thereby improving skin elasticity and hydration, enhancing hair luster, and increasing nail hardness. Clinical studies have confirmed that consistent supplementation improves skin wrinkles, moisture levels, and nail strength, while demonstrating good tolerability. As a beauty ingredient, hydrolyzed keratin is an excellent choice for brands developing anti-aging and beauty products.
Hydrolyzed Keratin in Cosmetics & Personal Care
Hydrolyzed keratin is a multifunctional natural active ingredient for skincare and hair care formulations, offering both moisturizing and film-forming benefits. Topical application of protein hydrolysates can improve skin hydration, elasticity, texture, and overall appearance, while supporting the replenishment of intercellular lipids in the stratum corneum may help maintain skin barrier function.
In hair care formulations, hydrolyzed keratin is widely incorporated into hydrolyzed keratin shampoo, hydrolyzed keratin conditioner, and hydrolyzed keratin mask products. Its low-molecular-weight peptides and amino acids can support hair conditioning, improve smoothness, and help protect the hair fiber from damage, making it a versatile ingredient for developing high-performance skincare and hair care products.
Is Hydrolyzed Keratin Powder Safe?
Hydrolyzed keratin has been assessed for safety by the CIR Expert Panel and deemed safe for use at current cosmetic concentrations; human clinical trials have shown it to be non-irritating and non-sensitizing even at concentrations as high as 25%, while Ames tests indicate it is non-mutagenic. Widely used in cosmetics at concentrations up to 5%, it is suitable for hair, skin, and nail care formulations. The raw material must be free from infectious pathogens, with strict controls on heavy metals and pesticide residues. As a natural protein ingredient offering both a proven safety profile and multifunctional care benefits, hydrolyzed keratin is an ideal choice for personal care product development.
Where Does Hydrolyzed Keratin Powder Come From?
Hydrolyzed keratin powder is derived from natural, keratin-rich raw materials, primarily animal by-products such as wool, bovine hooves and horns, and poultry feathers. Kintainutri® sources high-quality wool raw materials from certified, traceable suppliers to ensure consistent quality and regulatory compliance.
As a professional hydrolyzed keratin powder supplier, Kintainutri® implements strict quality control throughout the entire production process, from raw material sourcing to final packaging. Our products are available in multiple specifications ranging from 85% to 99% purity, meeting the diverse formulation needs of cosmetics, personal care products, and dietary supplements. With reliable supply capabilities and comprehensive technical documentation, including COA, MSDS, and HPLC reports, Kintainutri® provides global B2B customers with reliable delivery and consistent quality assurance.
Reference:
[1]: https://pmc.ncbi.nlm.nih.gov/articles/PMC11902160/
[2]: https://pmc.ncbi.nlm.nih.gov/articles/PMC11743286/
[3]: https://www.sciencedirect.com/science/article/pii/S2405844024100801
[4]: https://www.researchgate.net/publication/313369783_The_cosmetic_and_dermatological_potential_of_keratin_hydrolysate
[5]: https://www.cir-safety.org/sites/default/files/kerati062016FR.pdf
[1]: https://pmc.ncbi.nlm.nih.gov/articles/PMC11902160/
[2]: https://pmc.ncbi.nlm.nih.gov/articles/PMC11743286/
[3]: https://www.sciencedirect.com/science/article/pii/S2405844024100801
[4]: https://www.researchgate.net/publication/313369783_The_cosmetic_and_dermatological_potential_of_keratin_hydrolysate
[5]: https://www.cir-safety.org/sites/default/files/kerati062016FR.pdf
FAQ
-
Is hydrolyzed keratin powder good for hair?
-
Is hydrolyzed keratin a protein?
-
What is keratin hydrolysate powder used for in tanning?
About Us
