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Moumoujus

STEARDIMONIUM HYDROXYPROPYL HYDROLYZED SILK.

Insufficient Data / ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING

This modified silk protein derivative functions as a potent humectant and film-former, designed to enhance skin hydration and fortify its natural barrier. It supports overall skin health by promoting softness, elasticity, and a smoother texture.

Summary

Skin Conditioning Humectant Film-Former Moisturizing Protective Barrier Nourishing Elasticity Enhancer Cell Regeneration Support Skin Smoother Anti-inflammatory

Science

Mechanism of Action

STEARDIMONIUM HYDROXYPROPYL HYDROLYZED SILK operates by drawing moisture into the skin's outer layers, leveraging its high moisture-binding capacity to deliver deep hydration and prevent trans-epidermal water loss. Concurrently, it forms a protective film on the skin's surface, shielding it from environmental aggressors. Its amino acid profile, structurally similar to the skin's natural moisturizing factors, contributes to skin nourishment, improved elasticity, and potential cell regeneration, resulting in a visibly smoother complexion and exhibiting anti-inflammatory properties to soothe irritation.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 3.5 – 6.5
0 7 14

Stability

This ingredient exhibits optimal stability within a pH range of 3.5 to 6.5, with related hydrolyzed silk derivatives often performing best between pH 4.5 and 5.5. It demonstrates broad compatibility with cationic, anionic, and non-ionic formulation components. It can be integrated directly into the water phase or added at the final stage of formulation. For long-term stability, store below 30°C in sealed containers away from direct sunlight, and avoid prolonged exposure to temperatures exceeding 60°C. If the material develops haziness due to cold, gentle warming to 35°C and subsequent mixing can restore its clarity.

Safety

Safety Profile

CIR Status
Insufficient data
Sensitization risk Unknown

While the Cosmetic Ingredient Review (CIR) Expert Panel has assessed general 'Hydrolyzed Silk' ingredients as safe for use in cosmetics, specific safety data and maximum concentration levels for STEARDIMONIUM HYDROXYPROPYL HYDROLYZED SILK are not explicitly detailed in the available research. The 'Steardimonium' component signifies a quaternized ammonium compound, typically known for conditioning properties, which warrants specific safety consideration.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

Although the foundational Hydrolyzed Silk is a valuable ingredient for skin conditioning, the lack of specific safety and clinical efficacy data for STEARDIMONIUM HYDROXYPROPYL HYDROLYZED SILK limits a definitive rating for precision skincare formulations.

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