Hydrolyzed Silk Protein
What is Hydrolyzed Silk Protein?
Hydrolyzed silk protein comes from the fibroin extracted from silk produced by the Bombyx mori silkworm. Through hydrolysis, the large silk protein molecules are broken down into smaller peptides and amino acids, making them more soluble and easier to incorporate into formulations. In cosmetics, it belongs to the category of conditioning and humectant agents, commonly found in moisturizers, serums, shampoos, and conditioners. It functions by forming a lightweight, breathable film on the skin or hair surface, which helps lock in moisture, reduce water loss, and enhance texture. This film also provides a smooth, silky feel without greasiness. Its amino acid profile, rich in glycine, alanine, and serine, supports natural moisture-binding similar to human skin proteins, promoting better product absorption and comfort during application.
Benefits
Provides hydration by attracting and retaining moisture on skin and hair.
Creates a protective film that smooths surface texture and reduces friction.
Enhances product spreadability for a softer, more supple feel.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals with dry or dehydrated skin seeking gentle hydration. | People with known allergies to silk or insect-derived proteins. |
| People with damaged or brittle hair needing conditioning. | Individuals following strict vegan diets due to its animal origin. |
| Those preferring lightweight, non-greasy moisturizers. | Those sensitive to protein-based ingredients in rare cases. |
Safety Notes
- Rated low hazard by safety assessments for cosmetic use.
- Minimal risk of irritation or comedogenicity in formulations.
Frequently Asked Questions about Hydrolyzed Silk Protein
What is hydrolyzed silk protein made from?
It derives from silkworm silk fibroin, processed via hydrolysis into peptides.
Is it safe for sensitive skin?
Safety reviews indicate low irritation potential for cosmetic concentrations.
Does it work on hair too?
Yes, it conditions hair by forming a smoothing film.