Polyquaternium-7
What is Polyquaternium-7?
Polyquaternium-7 is a synthetic cationic polymer formed by copolymerizing acrylamide with diallyldimethylammonium chloride, resulting in a water-soluble quaternary ammonium compound. It appears primarily in rinse-off hair care items like shampoos, conditioners, and detanglers, typically at trace to low levels. The ingredient's positive charge enables strong adhesion to negatively charged hair keratin, countering static buildup and enhancing slip for easier combing. It deposits a sheer film that smooths cuticles, locks in moisture, and imparts a lightweight conditioning effect without heaviness. This mechanism improves overall hair texture, resilience to humidity, and visual appeal by reflecting light for added luster, making it a staple in formulations aiming for manageability across hair types.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Minimizes static electricity and flyaways for better hair control
Softens hair fibers and enhances smoothness during styling
Promotes volume, gloss, and conditioning in everyday products
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| People with frizzy or static-prone hair from dry environments | Persons with allergies to synthetic polymers or quats |
| Individuals using frequent shampoos needing built-in conditioning | Users experiencing eye sensitivity in rinse-off products |
| Those desiring lightweight volume and shine without residue | People with scalps highly reactive to film-forming agents |
Safety Notes
- Assessed safe for use in cosmetics by independent expert reviews
- Rated low hazard overall with minimal comedogenic risk
Frequently Asked Questions about Polyquaternium-7
What does Polyquaternium-7 do in hair products?
It neutralizes static, forms a smoothing film, and conditions hair for better manageability and appearance.
Is Polyquaternium-7 safe for daily use?
Expert reviews confirm safety in typical cosmetic concentrations for rinse-off applications.
Can it irritate skin or eyes?
Generally low irritation potential for skin; mild eye irritant in undiluted form, safer in products.