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Ingredient directory

Fervidobacterium Islandicum/chicken Feather Ferment Filtrate Extract

This innovative bio-fermented extract delivers low molecular weight keratins and amino acids, derived from chicken feathers through the anaerobic digestion by *Fervidobacterium islandicum*. It functions as a skin and hair conditioner, offering promising anti-aging effects by targeting key enzymes involved in collagen degradation.

Directory entry · Individual source review pending

This profile is awaiting an individual source review. Treat its ratings, dose estimates and compatibility labels as provisional; they are not medical advice or proof of a finished product’s effects.

Antistatic Hair Conditioning Humectant Skin Conditioning

Science

Mechanism of Action

The ingredient is a ferment filtrate extract created by the anaerobic digestion of chicken feathers using *Fervidobacterium islandicum* AW-1. This process employs the bacterium's keratinolytic proteases to break down feather keratin into low molecular weight (LMW) keratins and free amino acids. These LMW components are believed to provide skin conditioning and humectant properties, while also exerting anti-aging effects through the inhibition of matrix metalloproteinases (MMPs), specifically MMP-1 and MMP-13, which are central to collagen and elastin breakdown in the skin.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Low molecular weight feather keratins significantly suppressed the expression of ultraviolet B (UVB)-induced Matrix Metalloproteinase-1 (MMP-1) and Matrix Metalloproteinase-13 (MMP-13) in human dermal fibroblasts. Marginal inhibition of collagenase, elastase, and radical scavenging activities was also observed, indicating anti-skin aging properties.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 7 – 9
0 7 14

Stability

The enzymatic process for feather degradation by *Fervidobacterium islandicum* AW-1 exhibits optimal activity at pH 9, with complete feather breakdown occurring at pH 7. This indicates that the resulting peptides and amino acids within the ferment filtrate are stable and effective within a pH range of 7.0 to 9.0.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) and European Scientific Committee on Consumer Safety (SCCS) have not specifically evaluated FERVIDOBACTERIUM ISLANDICUM/CHICKEN FEATHER FERMENT FILTRATE EXTRACT. Paula's Choice notes this ingredient as 'Not rated' due to ongoing research and a current lack of comprehensive safety reviews.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

This ingredient shows valuable potential for anti-aging through significant MMP inhibition and offers skin/hair conditioning benefits; however, comprehensive safety data from regulatory bodies remains to be established.

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