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HYDROLYZED KERATIN PG-PROPYLMETHYLSILANEDIOL.

Valuable / HAIR CONDITIONING, SKIN CONDITIONING

HYDROLYZED KERATIN PG-PROPYLMETHYLSILANEDIOL is a silylated derivative of hydrolyzed keratin, engineered to act as an effective skin conditioning agent. It functions by preserving moisture within the skin, leading to a perceptibly smoother and softer surface. This ingredient is believed to improve overall skin texture and enhance moisture retention.

Summary

Skin Conditioning Humectant Occlusive

Science

Mechanism of Action

This ingredient operates as a skin conditioning agent by promoting moisture preservation, thereby contributing to a smooth and soft skin surface. As a silylated derivative of hydrolyzed keratin, it is theorized to protect and repair, extending similar benefits to the skin by enhancing texture and moisture retention. Hydrolyzed keratins can function dually as a humectant, drawing water into the stratum corneum, and as an occlusive, minimizing transepidermal water loss. Lower molecular weight fractions possess the capacity to penetrate the stratum corneum, while higher molecular weight fractions form a protective film on the epidermal surface.

Research

Clinical Evidence

Medium confidence
Effective range 3–5%
Optimal

N/A

Key findings

  1. 01 An efficacy study of hydrolyzed keratin in a hand cream reported no adverse effects at a 3% concentration, indicating its beneficial use for skin without negative reactions.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7
0 7 14

Stability

This ingredient is water-soluble, with optimal stability and efficacy suggested within a pH range of 5.0 to 7.0, based on research into hair keratins. Significant deviations to extreme acidic (below pH 3.0) or alkaline (above pH 8.0) conditions may negatively impact its structure and performance.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
5%
Sensitization risk Low

The CIR Expert Panel concluded that keratin-derived ingredients, including the base Hydrolyzed Keratin, are safe under current usage practices. Hydrolyzed Keratin demonstrated non-irritating properties in human studies up to 25% and in in vitro studies at 100%. No sensitization was observed in human patch tests at concentrations up to 5%. The ingredient is not subject to restrictions within the EU, and EWG assigns a 'LOW' hazard score for cancer, allergies, immunotoxicity, and developmental & reproductive toxicity.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

This keratin derivative is a well-tolerated skin conditioning agent, proven to enhance moisture retention and improve skin texture, making it a valuable addition to various skincare formulations.

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