murphyPolyquaternium-7
molecular structure · PubChem
AKA: Polyquaternium 7
Synthetic
Occlusive
Not Clean
OriginPolyquaternium-7 is a synthetic polymer derived from acrylic or methacrylic acid monomers and quaternary ammonium compounds. It is synthesized through polymerization reactions that cross-link the monomers to create a positively charged polymer backbone.
Polyquaternium-7 is the polymeric quaternary ammonium salt of acrylamide and dimethyl diallyl ammonium chloride
CAS #
26590-05-6
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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
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.
EWG
5
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not Phototoxic
Human test found no phototoxicity in the CIR safety assessment (CIR 21)
Eye Irritant in Testing
1 study / 1 irritating / reactions slight (CIR 21)
Mixed Skin Irritation Results
6 studies / 3 irritating / 3 not irritating / reactions slight to mild (CIR 21)
Mixed Sensitization Results
3 studies / 1 sensitizing / 2 not sensitizing (CIR 21)
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR