Hydroxypropyltrimonium Hydrolyzed Silk

Product Description

Hydroxypropyltrimonium Hydrolyzed Silk is a sophisticated cationic silk protein derivative manufactured in our specialized facility to provide unparalleled sensory and functional benefits. By chemically bonding quaternary ammonium groups to premium silk amino acids, this ingredient achieves exceptional substantivity, allowing it to form a continuous, protective "silk shield" on hair and skin surfaces. In the high-end B2B personal care market, it is valued as a key active for creating "liquid silk" formulations that meet professional standards for repair and luxurious texture.

Product Specification

• INCI Name: Hydroxypropyltrimonium Hydrolyzed Silk
• CAS No.: 115043-46-2 / 96690-41-4
• Product Type: Cationic Protein / Silk Derivative
• Source: Natural Silk Fibroin (Bombyx mori)
• Molecular Weight: 500 - 2,000 Da (Precision hydrolyzed for optimal film-forming)
• Appearance: Clear to pale amber liquid
• Purity (Dry Matter): ≥ 20.0% (Aqueous solution)
• Nitrogen Content: 2.5% - 4.5%

Key Benefits & Applications

• Unrivaled Sensory Profile: Imparts a unique "silky" feel to skin and hair that cannot be replicated by synthetic polymers, enhancing product premiumization.
• Targeted Cuticle Repair: The cationic charge directs the silk peptides to damaged, anionic sites on the hair shaft, effectively sealing the cuticle and preventing moisture loss.
• Color Protection: Forms a breathable barrier that helps lock in hair color pigments and protects against UV-induced oxidative stress.
• Enhanced Elasticity: Increases the tensile strength of hair fibers and improves skin firmness by providing essential silk amino acids in a substantive form.
• Applications: Essential for salon-grade conditioners, silk-infusion shampoos, luxury anti-aging primers, and soothing body lotions.

Formulation Guidelines

• Suggested Dosage: 0.5% – 3.0% for daily care; up to 5.0% for intensive repair treatments.
• pH Stability: Maintains excellent stability and efficacy within pH 4.5 – 7.5.
• Processing: Fully water-soluble. It is recommended to add the ingredient during the final phase of production (below 40°C) to preserve the delicate protein structure.
• Compatibility: Shows excellent compatibility with cationic and non-ionic ingredients. Pre-test for clarity when formulating with high loads of anionic surfactants.
• Synergy: Combine with Ceramide NP for comprehensive lipid-protein restoration and enhanced skin barrier defense.