PEG-150 Distearate

PEG / Ethoxylated

What is PEG-150 Distearate?

PEG-150 Distearate is a polyethylene glycol (PEG) derivative formed by esterifying stearic acid, a common fatty acid often sourced from vegetable oils, with a PEG chain averaging 150 ethylene oxide units. This results in a waxy, water-soluble solid widely used in rinse-off products like shampoos and body washes, as well as leave-on items such as conditioners and moisturizers. It functions by reducing surface tension to enable better mixing of oil and water phases, preventing separation in emulsions. As a thickener, it increases viscosity for a richer texture, while its surfactant properties support gentle dirt removal and fragrance solubilization, contributing to clear, stable formulations without altering skin feel significantly. Regulatory bodies affirm its role in cosmetic manufacturing due to effective performance at low levels.

Comedogenic Rating 2/5 Moderate risk
EWG Safety Rating 1-3 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.
Cleansing agent
Removes dirt, oil, and impurities by lowering surface tension and forming micelles, enabling soils to be lifted and rinsed away from skin, hair, or teeth.
Solubilizing agent
Helps incorporate oils and fragrance into water-based formulas by forming micro-solutions, enabling clear sprays, toners, and micellar products.

Benefits

Enhances product texture by increasing viscosity for smoother application.

Stabilizes emulsions to maintain formula consistency over time.

Supports effective cleansing by lowering surface tension for better rinse-off.

Who It's For

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

Who May Benefit Who Should Avoid
Users of shampoos and body washes seeking stable, foamy cleansers.
Those with sensitivity to ethoxylated compounds.
Individuals preferring creamy lotions and conditioners with even distribution.
Acne-prone skin due to mild comedogenic potential.
People wanting clear toners or sprays with solubilized fragrances.
Users preferring non-surfactant heavy formulations.

Safety Notes

  • Rated low to moderate hazard by environmental health databases.
  • Reviewed safe for cosmetic use by expert panels with impurity controls.

Frequently Asked Questions about PEG-150 Distearate

What does PEG-150 Distearate do in skincare?

It acts as an emulsifier to blend oils and water, thickens products, and aids cleansing by reducing surface tension.

Is PEG-150 Distearate safe for daily use?

Safety reviews indicate it is suitable in cosmetics when impurities are controlled, with low overall concern ratings.

Can it clog pores?

It carries a mild comedogenic rating, so use sparingly if prone to breakouts.