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HYDROLYZED WOOL CUTICLE PROTEIN.

Valuable / HAIR CONDITIONING, SKIN CONDITIONING

Hydrolyzed Wool Cuticle Protein is a refined keratin peptide derived from wool, meticulously processed to enhance skin health. It functions as an effective humectant, drawing and retaining vital moisture to reinforce the skin's natural barrier and improve elasticity for a resilient, supple complexion.

Summary

moisturizer/humectant skin conditioning film-forming skin protecting

Science

Mechanism of Action

On the skin, this ingredient primarily acts as a humectant, efficiently binding and retaining moisture to prevent dehydration and maintain optimal hydration levels. It also functions as a sophisticated skin conditioning agent, contributing to a smooth, soft, and supple feel. Furthermore, it creates a continuous, protective film on the skin's surface, offering an additional layer of defense against environmental stressors.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7.5
0 7 14

Stability

This ingredient exhibits optimal stability within a pH range of 5.0 to 7.5, with some sources indicating a narrower range of 5.0-5.8 or 5.5-7.5, and observations of neutral pH (7) after dialysis. It is typically preserved with common cosmetic stabilizers such as butylene glycol, phenoxyethanol, and ethylhexylglycerin. Formulation performance can vary significantly with molecular weight; low molecular weight fractions (under 1000 Daltons) may not be suitable for emulsions, whereas higher molecular weight varieties (over 3000 Daltons) can enhance emulsifying and thickening properties.

Conflicts

  • May precipitate out of certain formulations, such as conditioners, if not properly and thoroughly incorporated into the water-phase solution.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that 'Keratin and Keratin-Derived Ingredients', including those often sourced from wool, are safe under current practices of use and concentration. While specific maximum concentrations for 'HYDROLYZED WOOL CUTICLE PROTEIN' in skin applications were not detailed in the provided data, suppliers are FDA-registered. It is important to note that 'Hydrolyzed Hair Keratin' is prohibited in cosmetic products in the EU, though this ingredient specifies 'wool cuticle protein'.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Hydrolyzed Wool Cuticle Protein is a valuable ingredient, clinically shown to enhance skin hydration, elasticity, and barrier function, with a positive safety profile from the CIR Expert Panel.

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