Polyquaternium-7
AKA: Polyquaternium 7
Synthetic
Occlusive
Not Clean
Polyquaternium-7 is the polymeric quaternary ammonium salt of acrylamide and dimethyl diallyl ammonium chloride
CAS #
26590-05-6
Form
Powder
Functions
Antistatic
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Anti-Inflammatory
Moisturizing
Fights Acne
Creates protective layer
Reduces flyaways
Traditional Use
A synthetic quaternary ammonium polymer developed for cosmetic use as a conditioning and antistatic agent. Designed to improve hair manageability and provide protective film-forming properties.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR