High-Performance Cationic Polymer: 5-in-1 Hair & Scalp Solution with 72H Antimicrobial Defense

Basic Information

• INCI: Polyquaternium-73

• CAS No.: 202905-05-1

• Molecular Weight: 800,000-1,200,000 Da

• Charge Density: +4.8 meq/g

• Solubility:

  • Water: Fully soluble

  • pH Range: 2.0-10.0

• Certifications: COSMOS, ISO 16128-1, Halal

Description: Quadruple Charge-Cluster Technology

Patented branched-chain architecture provides:

• 72-hour antimicrobial persistence (vs 12h for PQ-10)

• Thermal protection up to 230°C (flat iron/curling)

• Anionic surfactant resistance in shampoo systems

Clinically shown to reduce hair breakage by 63% while maintaining 99.9% microbial control between washes.

Scientific Benefits

① Cuticle Sealing Matrix

• Reduces combing force (-58%)

• Increases hair hydrophobicity (contact angle 112°)

• Prevents color fade from UV/swimming

② Scalp Microbiome Balance

• Selective anti-Malassezia action (MIC 25ppm)

• Preserves beneficial Staphylococcus epidermidis

• pH-responsive charge activation

③ Heat & Chemical Protection

• Forms thermal buffer layer at 180-230°C

• Neutralizes alkaline damage during coloring

• Chelates metal ions from hard water

④ Fiber Reinforcement

• Increases hair tensile strength (+44%)

• Reduces split ends formation (-71%)

• Restores cystine disulfide bonds

⑤ Sustainable Performance

• 72-hour humidity resistance

• Cold process compatible

• Biodegradable (OECD 301F)

Application Guidelines

➀ Premium Shampoos

• Anti-dandruff formulas (0.8-1.5%)

• Color-protective systems (1-2%)

• Clarifying detox shampoos

➁ Conditioning Treatments

• Leave-in sprays (0.2-0.8%)

• Hot oil treatments (0.5-1.2%)

• Keratin reconstruction masks

➂ Styling Products

• Heat protection serums (0.5-1.5%)

• Humidity-resistant gels (0.3-1%)

• Texture sprays for fine hair

➃ Scalp Care

• Pre-shampoo exfoliators (0.1-0.5%)

• Post-transplant soothing lotions

• Sebum-regulating tonics

➄ Sustainable Formats

• Waterless shampoo bars

• Refillable conditioning powders

• Cold-processed emulsions