Polyquaternium-20

What is Polyquaternium-20?

Polyquaternium-20 is a synthetic cationic copolymer produced from acrylamide and diallyldimethylammonium chloride monomers, featuring quaternary ammonium groups for positive charge. Primarily found in rinse-off hair care formulations like conditioners, shampoos, and styling mousses, it functions through electrostatic attraction to negatively charged hair surfaces. This deposition creates a conditioning layer that minimizes friction between hair strands, neutralizes static buildup from dryness or brushing, and deposits a sheer film to lock in moisture and enhance structure. In products, it contributes to detangling, softness, and humidity resistance without heavy residue, supporting lightweight, manageable results across various hair types in daily routines.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.
Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Hair fixative
Provides style hold by forming a film on hair, helping maintain shape, reduce frizz, and improve durability in sprays, gels, and mousses.

Benefits

Reduces static electricity for smoother, more manageable hair.

Forms a lightweight film to boost style hold and frizz control.

Improves surface conductivity in conditioners and styling aids.

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 flyaway hair seeking antistatic effects.
Those with rare sensitivities to quaternary ammonium compounds.
Users of styling products needing durable hold.
People preferring silicone-free or polymer-free formulations.
Individuals wanting enhanced hair smoothness from conditioners.
Individuals with known contact allergies to synthetic copolymers.

Safety Notes

  • Rated low hazard by environmental health databases.
  • Deemed safe for cosmetic use in expert reviews of similar polymers.

Frequently Asked Questions about Polyquaternium-20

What is Polyquaternium-20 used for?

It serves as an antistatic agent, film former, and hair fixative in hair care products to improve manageability and hold.

Is Polyquaternium-20 safe for skin and hair?

It carries a low hazard rating from reliable databases and is considered safe in typical cosmetic applications.

Does it work on all hair types?

Effective for reducing static and frizz across various hair textures in rinse-off formulations.