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HYDROXYPROPYLTRIMONIUM HYDROLYZED SILK.

Valuable CAS - / ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING

Hydroxypropyltrimonium Hydrolyzed Silk is a cationic derivative of hydrolyzed silk protein, engineered to profoundly hydrate and rejuvenate the skin. It attracts and retains water, forming a protective barrier while enhancing skin elasticity and promoting a smoother, firmer complexion.

Summary

Humectant Skin Conditioning Moisture Barrier Support Elasticity Enhancer Anti-aging Protective Film Former Cellular Regenerator Skin Brightening (Potential)

Science

Mechanism of Action

Operating as a potent humectant, Hydroxypropyltrimonium Hydrolyzed Silk actively attracts and binds water molecules, significantly reducing trans-epidermal water loss and delivering profound skin hydration. Its amino acid composition closely mirrors that of native skin collagen and the natural moisturizing factor, facilitating enhanced skin elasticity, promoting optimal cellular function, and visibly diminishing the appearance of fine lines and wrinkles. Furthermore, it creates a lightweight, breathable film on the epidermal surface, shielding the skin from environmental stressors. Preliminary data suggests its capacity to inhibit tyrosinase activity, potentially aiding in skin brightening, while its optimized low molecular weight supports deeper cellular penetration for robust regeneration and improved dermal density and elasticity.

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 4 – 5.5
0 7 14

Stability

The base ingredient, Hydrolyzed Silk, exhibits good thermal stability. Optimal stability for hydrolyzed silk is observed within a pH range of 4.0 to 5.5.

Conflicts

  • Highly anionic ingredients (e.g., Carbopol, Xanthan gum, Carrageenan, Hyaluronic Acid) due to its cationic nature, which may lead to haze or precipitation

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

While the Cosmetic Ingredient Review (CIR) Expert Panel has deemed 'Hydrolyzed Silk' and other silk proteins safe for cosmetic applications, 'HYDROXYPROPYLTRIMONIUM HYDROLYZED SILK' as a distinct cationic derivative has not been individually assessed in the available CIR abstracts. However, the foundational hydrolyzed silk is generally categorized as non-irritating in diverse dermal tests and exhibits minimal to non-irritant properties in ocular irritation studies. It is not listed as a prohibited or restricted ingredient within the European Union.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A multifaceted ingredient offering significant hydration, barrier support, and potential anti-aging benefits for a wide range of skin types, though specific clinical efficacy data for this derivative is currently limited.

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