Hydroxypropyltrimonium Hydrolyzed Keratin

Product Description

Hydroxypropyltrimonium Hydrolyzed Keratin is a high-affinity cationic protein derivative manufactured at our specialized facility to provide intensive structural reinforcement for hair and skin. By combining the natural amino acid profile of keratin with a quaternary ammonium functional group, this ingredient exhibits exceptional substantivity toward damaged keratinous fibers. It serves as a vital commercial solution for the "bond-repair" market, offering formulators a science-backed active to restore hair integrity and resilience against chemical and thermal stress.

Product Specification

• INCI Name: Hydroxypropyltrimonium Hydrolyzed Keratin
• CAS No.: 68915-25-3 / 225234-16-0
• Product Type: Cationic Protein / Keratin Derivative
• Source: Natural Wool-derived Keratin
• Molecular Weight: 1,000 - 3,500 Da (Optimized for cuticle adhesion)
• Appearance: Amber to brown clear liquid
• Purity (Protein Content): ≥ 20.0%
• Solubility: Fully water soluble

Key Benefits & Applications

• Structural Cross-Linking: Penetrates the hair cortex and cross-links with existing keratin chains to fill "voids" caused by bleaching or perming.
• Anti-Breakage Efficacy: Dramatically increases the tensile strength of hair fibers, reducing breakage and split ends by reinforcing the internal sulfur-rich protein matrix.
• Thermal Protection: Forms a heat-stable protective film that mitigates damage from blow-drying and flat-ironing at high temperatures.
• Substantive Conditioning: Unlike standard hydrolyzed proteins, its cationic charge ensures it remains attached to the hair shaft even after thorough rinsing.
• Applications: Crucial for "Plex" style repair systems, professional conditioners, keratin treatment shampoos, and fortifying nail care products.

Formulation Guidelines

• Suggested Dosage: 0.5% – 2.0% for preventative care; 3.0% – 5.0% for intensive salon treatments.
• pH Stability: Performs optimally in formulations with a pH between 4.0 and 7.0.
• Processing: Add during the cool-down phase (below 45°C) to maintain the bio-activity of the keratin peptides.
• Compatibility: Highly compatible with cationic and non-ionic emulsifiers; pre-verify compatibility when using high levels of anionic thickeners like Carbomer.
• Synergy: Combine with Biotin for a comprehensive "inside-out" approach to hair thickening and follicle support.