PEG-3 Distearoylamidoethylmonium Methosulfate

What is PEG-3 Distearoylamidoethylmonium Methosulfate?

PEG-3 Distearoylamidoethylmonium Methosulfate is a synthetic quaternary ammonium compound, featuring stearoyl amide groups linked to a PEG-3 chain and methosulfate counterion. Primarily found in rinse-off hair care formulations like conditioners and detanglers, it acts as a conditioning active. Its cationic nature allows it to bind to negatively charged hair fibers, forming a protective layer that minimizes friction between strands. This deposition enhances surface slip, combats static buildup by improving conductivity, and facilitates easier comb-through. The PEG-3 component increases water solubility, enabling effective delivery in aqueous systems without residue buildup. Commonly used at low levels, it supports overall hair feel without weighing down.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3 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.
Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.

Benefits

Minimizes static electricity for reduced flyaways and smoother styling.

Boosts hair softness and combability by lowering surface friction.

Promotes shine and manageability in conditioning formulas.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry, frizzy, or static-prone hair.
Those sensitive to quaternary ammonium compounds.
Users seeking improved detangling from conditioners.
Individuals preferring preservative-free or quat-free hair products.
People wanting enhanced smoothness in styling routines.
People with scalp irritation histories from similar actives.

Safety Notes

  • EWG rates it with moderate overall concern (score 3).
  • Shows low comedogenic potential (rating 0), suitable for non-pore-clogging use.

Frequently Asked Questions about PEG-3 Distearoylamidoethylmonium Methosulfate

What does this ingredient do in hair products?

It serves as an antistatic and conditioning agent, reducing static and improving hair smoothness and manageability.

Is it safe for daily use in conditioners?

Rated moderate by EWG (score 3) with low comedogenic potential, common in rinse-off hair care.

Does it build up on hair over time?

Designed for rinse-off use, minimizing residue while providing effective conditioning.