Distearoylethyl Hydroxyethylmonium Methosulfate

What is Distearoylethyl Hydroxyethylmonium Methosulfate?

Distearoylethyl hydroxyethylmonium methosulfate is a quaternary ammonium compound, chemically a methosulfate salt featuring two stearoyl chains (derived from stearic acid, a common fatty acid from plant or animal sources) attached to an ethyl hydroxyethyl ammonium group. Produced synthetically, it serves primarily in rinse-off hair care formulations like conditioners and detanglers. In products, its positive charge enables strong adsorption onto the negatively charged keratin surface of hair shafts. This interaction forms a lubricating film that minimizes friction between strands, neutralizes static buildup from shampooing, and facilitates easier combing while imparting a silky texture without residue buildup in typical use levels.

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

Neutralizes static electricity on hair for reduced flyaways and better styling control.

Enhances hair surface smoothness, making it softer and more manageable after washing.

Supports detangling by lowering inter-fiber friction in conditioning products.

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 fine or straight hair prone to static and flyaways.
Those with known sensitivity to quaternary ammonium compounds.
Users seeking improved post-shampoo manageability without heavy residue.
Individuals preferring silicone-free or minimalist hair products.
People incorporating rinse-off conditioners into their hair care routine.
Users of leave-on products where buildup might occur over time.

Safety Notes

  • Rated moderate concern by EWG due to potential contamination risks, but safe in rinse-off use per reviews.
  • Non-comedogenic, unlikely to clog pores on scalp or skin contact areas.

Frequently Asked Questions about Distearoylethyl Hydroxyethylmonium Methosulfate

What products contain this ingredient?

Commonly found in hair conditioners, detanglers, and some styling aids for smoothing effects.

Is it safe for daily use?

Suitable for regular rinse-off use, with low comedogenic rating and moderate overall safety profile.

Does it work on all hair types?

Effective for static-prone hair, particularly benefiting fine or chemically treated strands.