Hair conditioning · Established

Polyquaternium-7

INCI: Polyquaternium-7 · PQ-7
DetanglesSoftensReduces static

A gentle conditioning polymer that detangles, softens and smooths, the reason hair combs through easily.

What it is

Polyquaternium-7 is a positively-charged (cationic) conditioning polymer. Because damaged hair is negatively charged, PQ-7 is drawn to it, laying down a light conditioning film that improves wet and dry combing, softness and static control. It is a workhorse of modern, sulfate-free conditioning.

How it works

Deposits where needed

Its cationic charge draws it to damaged, negatively-charged areas, conditioning them preferentially.

Detangles and smooths

The film it forms reduces friction, so hair detangles easily, feels softer and resists static and frizz.

The evidence

Polyquaternium-7 is a long-established, well-tolerated conditioning agent, central to smooth, easy-combing modern haircare.

Works well with

Works within Tricelleon alongside Amodimethicone and proteins; a core part of the charge-targeted strategy.

Who it's for

All hair types; especially tangle-prone, frizzy or static-prone hair.

Worth knowing

A dependable conditioning polymer that makes hair manageable, quietly essential rather than headline-grabbing.

Evidence tiers reflect the general weight of published cosmetic-science literature on this ingredient, not a claim about any individual SENSCERA product. Cosmetic products support the appearance and condition of skin and hair; they are not intended to diagnose, treat, cure or prevent any disease. Individual results vary.