Polyglyceryl-2 Isostearate

What is Polyglyceryl-2 Isostearate?

Polyglyceryl-2 Isostearate is a non-ionic surfactant formed by linking polyglycerol-2, a short-chain polymer from glycerol, with isostearic acid, a branched fatty acid sourced from vegetable oils. It falls into the polyglyceryl ester category of cosmetic ingredients, primarily featured in moisturizers, lotions, cleansers, and makeup removers. In formulations, it works by lowering surface tension to facilitate oil-water mixing, creating stable emulsions with smooth textures. Its emollient action helps fill skin irregularities for a softer feel, while its surfactant properties enable gentle foaming and dirt removal without stripping natural oils. The branched isostearate chain contributes to its mild profile, supporting hydration retention in leave-on and rinse-off products alike.

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:

Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
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

Provides emollient effects to smooth and soften skin texture.

Stabilizes emulsions for consistent lotion and cream consistency.

Enables mild surfactant action for effective yet gentle cleansing.

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 with dry skin seeking softening ingredients.
Those with known allergies to polyglycerol esters.
Users of emulsion-based moisturizers and lotions.
People sensitive to fatty acid derivatives.
Individuals preferring mild surfactants in cleansers.
Individuals experiencing reactions to similar emulsifiers.

Safety Notes

  • Deemed safe for cosmetic use by regulatory reviews.
  • Low comedogenic potential, unlikely to clog pores.

Frequently Asked Questions about Polyglyceryl-2 Isostearate

What is Polyglyceryl-2 Isostearate?

A surfactant-emulsifier from polyglycerol and isostearic acid, used to mix oils and water while softening skin.

Is it safe for daily skincare?

Yes, considered safe in cosmetics with low hazard ratings and mild properties.

What products contain it?

Common in creams, lotions, cleansers, and makeup removers for stability and emollience.