Steareth-6

What is Steareth-6?

Steareth-6, or PEG-6 stearyl ether, is a synthetic non-ionic surfactant created by attaching six ethylene oxide units to stearyl alcohol, a long-chain fatty alcohol sourced from stearic acid in plant or animal fats. This ethoxylation process yields an amphiphilic molecule with hydrophilic and lipophilic balances suited for cosmetics. Primarily used in shampoos, body washes, facial cleansers, lotions, and creams, it serves rinse-off and leave-on products alike. Functionally, it diminishes surface tension to promote wetting, foaming, and removal of oils and debris during cleansing. As an emulsifier, it forms micellar structures that encapsulate oils within water, stabilizing emulsions against phase separation for smooth, consistent textures that enhance product spreadability and efficacy.

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

Facilitates gentle removal of impurities and excess oils in cleansers.

Supports creation of uniform emulsions in creams and lotions for better application.

Compatible with non-comedogenic formulations suitable for daily use.

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 preferring mild cleansing products for everyday routines.
Those with known allergies to ethoxylated surfactants.
Users of emulsion-based moisturizers needing stable textures.
People sensitive to fatty alcohol derivatives.
Individuals seeking low-pore-clogging options in skincare.
Individuals opting for completely PEG-free cosmetics.

Safety Notes

  • Assessed as safe in cosmetics by expert reviews with low hazard ratings.
  • Minimal skin irritation reported in standard use concentrations.

Frequently Asked Questions about Steareth-6

What does Steareth-6 do in skincare?

Acts as a surfactant for cleansing and foaming, and emulsifier for blending oil and water in stable products.

Is Steareth-6 safe for daily use?

Yes, recognized as low hazard with minimal irritation risk in typical cosmetic levels.

Does Steareth-6 clog pores?

No, it has a comedogenic rating of 0, making it suitable for pore-conscious routines.