Polyquaternium-37
AKA “PQ-37, Polyquaternium-37”
Synthetic
Ingredient Facts
Polyquaternium-37
AKA: PQ-37
Synthetic · Film Forming · EWG: 4
Synthetic
Occlusive
Synthetic
Clean
Creates a lightweight protective layer that smooths hair and reduces frizz and static, while helping your style stay in place longer.
CAS #
26161-33-1
Form
Powder
See origin →
Functions
Antistatic
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Reduces Static
Creates Protective Barrier
Creates protective layer
Reduces flyaways
Traditional Use
A synthetic polymer developed in the 2000s for use in cosmetic formulations. Designed to provide enhanced conditioning and styling properties with improved substantivity and film formation.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: CosIng · EWG · CIR