PEG-10 Stearate

PEG / Ethoxylated
Concerns
Malassezia Feeding

What is PEG-10 Stearate?

PEG-10 Stearate is the ester formed by reacting stearic acid, a fatty acid from plant or animal sources, with ten units of ethylene oxide through an ethoxylation process. This creates a hydrophilic molecule with surfactant properties, commonly used in rinse-off and leave-on skincare formulations like lotions, creams, shampoos, and body washes. It functions by lowering interfacial tension between oil and water phases, forming micelles that stabilize emulsions and facilitate the dispersion of ingredients. In cleansing products, it contributes to foaming and dirt removal without stripping skin excessively. Its amphiphilic structure allows even distribution of active components, enhancing product consistency and sensory feel. Typically incorporated at low levels, it supports the creation of lightweight yet protective barriers in moisturizers.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 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.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Helps form smooth, stable emulsions for even application in lotions and creams.

Supports gentle cleansing by reducing surface tension in washes and shampoos.

Promotes non-comedogenic formulations suitable for various skin types.

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 seeking creamy textures in moisturizers without pore clogging.
Those prone to Malassezia-related issues like fungal acne.
Users of shampoos or body washes needing consistent lather.
People sensitive to ethoxylated compounds.
People with normal to dry skin desiring blendable products.
Individuals concerned about potential impurities in PEG ingredients.

Safety Notes

  • Rated as moderate concern by EWG due to possible contamination risks.
  • Deemed safe for cosmetic use in reviews by regulatory expert panels.

Frequently Asked Questions about PEG-10 Stearate

What does PEG-10 Stearate do in skincare?

It acts as a surfactant and emulsifier, blending oils and water for stable creams, lotions, and cleansers with smooth textures.

Is PEG-10 Stearate comedogenic?

It has a comedogenic rating of 0, making it unlikely to clog pores.

Are there safety concerns with PEG-10 Stearate?

EWG rates it moderate (3); watch for Malassezia feeding in prone individuals and ensure product purity.