Hydrolyzed Fibroin
What is Hydrolyzed Fibroin?
Hydrolyzed fibroin is a processed form of fibroin, the primary protein extracted from the silk produced by the Bombyx mori silkworm. This ingredient undergoes hydrolysis, breaking down the large protein chains into smaller, water-soluble peptides. In cosmetics, it belongs to the category of protein-based conditioning agents commonly found in skincare creams, serums, shampoos, and conditioners. It functions by forming a lightweight, breathable film on the skin and hair shafts, which helps lock in moisture and reduce surface friction. This film-forming property allows it to improve texture without heaviness, while its humectant-like action draws moisture to the surface. Derived naturally from silk, it mimics the structure of human keratin, aiding compatibility in formulations for daily use.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Enhances skin softness and flexibility through moisture-binding properties.
Improves hair manageability by reducing friction and static buildup.
Provides a protective film that supports surface smoothness.
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 rough skin seeking added hydration. | Those with known silk protein allergies. |
| People with dull or frizzy hair looking for better shine and ease. | People sensitive to insect-derived ingredients. |
| Users preferring natural protein-based conditioners in routines. | Individuals avoiding animal-sourced components in products. |
Safety Notes
- Rated low hazard by environmental working group assessments.
- Non-comedogenic, unlikely to clog pores.
Frequently Asked Questions about Hydrolyzed Fibroin
What is hydrolyzed fibroin derived from?
It comes from the fibroin protein in silk produced by silkworms.
Is it safe for daily skincare use?
Yes, it has a low safety rating and is non-comedogenic.
Does it work on both skin and hair?
Yes, it conditions both by forming a moisture-retaining film.