Evidence supporting the use of: Silk protein
For the body system: Hair

Links: Go back one page, Tool main page, Ingredients list, Health conditions list, Body systems list

Table of Contents

Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Silk protein, often referred to as hydrolyzed silk or silk amino acids, is used in hair care formulations due to its known ability to improve hair’s texture and appearance. Scientific studies have shown that silk proteins have a high affinity for keratin, the key structural protein in hair. Due to their low molecular weight, hydrolyzed silk proteins can penetrate the hair shaft and form a protective film on the hair surface, which may increase moisture retention, reduce breakage, and enhance smoothness and shine.

Research supports that silk proteins can improve hair’s mechanical properties, such as tensile strength and elasticity, primarily through their film-forming and moisture-binding capabilities (source). However, most of these studies are in vitro or focus on the physical properties of hair after topical application, rather than demonstrating long-term health benefits or systemic effects. There is also some evidence from cosmetic science literature that silk proteins can decrease friction between hair fibers, making hair easier to comb and less prone to damage.

In summary, the use of silk protein in supporting the "hair body system" is scientifically grounded, though the evidence is moderate and largely limited to cosmetic improvements rather than profound biological effects. There is a lack of high-quality clinical trials, so the scientific rating is 2/5.

More about Silk protein
More about Hair

Other body systems supported by Silk protein

Hair
Skin

Products containing Silk protein

We currently have no products on Caring Sunshine that contain this ingredient.