Polyquaternium-7
Derived from a specialized copolymerization of dimethyldiallylammonium chloride (DADMAC) and acrylamide, Polyquaternium-7 combines the benefits of cationic charge with the mildness of acrylamide segments. This unique molecular structure grants it excellent water solubility, compatibility with anionic surfactants, and a balanced charge density—key traits that make it ideal for both hair and skin care formulations. With a moderate molecular weight, Polyquaternium-7(PQ-7) adheres gently to negatively charged surfaces (like hair follicles and skin cells) without causing buildup, ensuring long-lasting effects without heaviness.
The functions of Polyquaternium-7:
Superior Conditioning: Softens hair, reduces tangling, and improves wet/dry combability, leaving strands smooth and manageable.
Moisture Retention: Helps lock in hydration by forming a lightweight, breathable film on skin and hair, enhancing suppleness.
Antistatic Protection: Neutralizes static charges in hair, minimizing frizz and flyaways, even in dry environments.
Gentle Formulation Compatibility: Works seamlessly with anionic, nonionic, and amphoteric surfactants, making it suitable for sensitive skin and scalp products.
Texture Enhancement: Adds a luxurious, silky feel to formulations without greasiness or stickiness.
Polyquaternium-7’s cationic groups (positively charged) are naturally drawn to the negatively charged surfaces of hair and skin. When applied, it adheres evenly, forming a protective yet flexible film that:
Smooths hair cuticles: Fills gaps in damaged hair, reducing friction and improving shine.
Key Technical Parameters
| Type | Polyquaternium-7 | Polyquaternium-7H |
| Appearance (25℃) | Colorless or yellowish transparent viscous liquid | |
| PH Value(10% aqueous solution) | 5.5~7.5 | 3.3~4.5 |
| Viscosity(25℃,mPa.s) | 8,000~16,000 | 1,200~4,500 |
| Solid Content | 9.0~10.5% | 41.0~45.0 |
| Residue Acrylamide | 5.0 ppm max. | / |
| Color(Hazen) | / | 100 max. |
Applications
● Shampoo
● Hair Conditioner
● Body wash
● Hand Soap
Advantages
● Affinitive to keratin of hair and skin
● Impart hair lubricous and moist feeling
● Excellent curling retention
● Improve dry & Wet Combability,emollience and gloass of hair
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