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SODIUM/TEA-LAUROYL HYDROLYZED KERATIN.

Valuable / ANTISTATIC, CLEANSING, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING

SODIUM/TEA-LAUROYL HYDROLYZED KERATIN is a sophisticated keratin-derived ingredient engineered to significantly enhance skin hydration and fortify the epidermal barrier. It functions synergistically as a humectant, attracting vital moisture to the skin, and an occlusive agent, minimizing trans-epidermal water loss for improved skin resilience and texture.

Summary

Skin Conditioning Humectant Film Forming Surfactant

Science

Mechanism of Action

This ingredient operates through a multifaceted mechanism to optimize skin health and integrity. It acts as a potent humectant, actively binding water from the deeper layers of the epidermis to the stratum corneum, thereby increasing intrinsic moisture levels. Concurrently, it forms a protective film on the skin's surface, reducing trans-epidermal water loss and acting as an occlusive agent. Lower molecular weight fractions are capable of penetrating the stratum corneum to deliver conditioning benefits, while higher molecular weight components establish a reinforcing barrier. This action collectively improves skin moisturization, elasticity, and feel, reinforcing the skin barrier's integrity and enhancing its water-holding capacity. Additionally, it offers mild surfactant properties, contributing to skin conditioning, lubrication, and softness.

Research

Clinical Evidence

High confidence
Effective range 2–4%
Optimal

Effective at 2-4% for significant hydration and barrier benefits.

Key findings

  1. 01 Clinical studies demonstrate that a 2% concentration of keratin hydrolysate, when formulated in an ointment base, can increase stratum corneum hydration by 14% to 23%.
  2. 02 A 4% concentration of the keratin hydrolysate in an ointment base has been shown to decrease trans-epidermal water loss by 26% to 46%, indicating substantial barrier reinforcement.
  3. 03 An efficacy study utilizing 3% hydrolyzed keratin in a hand cream reported no adverse effects, confirming its safety and tolerability at functional concentrations.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7.5
0 7 14

Stability

SODIUM/TEA-LAUROYL HYDROLYZED KERATIN is generally stable under typical storage conditions, requiring protection from excessive heat and moisture. When incorporated into ointment bases, it has demonstrated stability without phase separation for periods up to 6 months. An optimal pH range of 5.0 to 7.5 is recommended for maintaining its integrity and suitability in skin applications.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
25%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed keratin-derived ingredients, including Hydrolyzed Keratin, as safe for use in cosmetics at present concentrations. Human studies consistently show non-irritating properties at concentrations up to 25%. In vitro tests at 100% and rabbit studies also indicated minimal to no irritation. Ocular irritation was not observed at concentrations up to 5%, with only slight potential noted at 10%. Furthermore, patch studies at up to 5% concentration revealed no evidence of skin sensitization.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

SODIUM/TEA-LAUROYL HYDROLYZED KERATIN is a valuable ingredient for enhancing skin hydration, reinforcing barrier function, and improving overall skin texture and elasticity, supported by robust safety data.

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