Polyglyceryl-2 Diisostearate

What is Polyglyceryl-2 Diisostearate?

Polyglyceryl-2 Diisostearate is a diester produced from polyglycerol-2, made by polymerizing glycerol, and isostearic acid, a branched fatty acid from vegetable oils like rapeseed or coconut. This PEG-free ingredient appears in categories such as moisturizers, cleansers, makeup removers, and sunscreens. It acts as an emulsifier by creating a stable film between oil and water phases, preventing separation for uniform texture. As an emollient, it lubricates the skin surface to enhance smoothness and spreadability. Its surfactant role reduces surface tension for better mixing and mild foaming in rinse-off products, offering a lightweight feel without greasiness.

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

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

Supports stable emulsions in lotions and creams for even application.

Softens skin texture by filling surface irregularities.

Aids gentle cleansing in wash-off formulas without harshness.

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 effects.
Those with allergies to fatty acid esters.
Users of emulsion products for reliable consistency.
People sensitive to emollient ingredients.
Individuals preferring mild, non-comedogenic surfactants.
Individuals avoiding glycerin-derived compounds.

Safety Notes

  • Low comedogenic potential, suitable for most skin types.
  • Minimal irritation risk based on cosmetic safety assessments.

Frequently Asked Questions about Polyglyceryl-2 Diisostearate

What does Polyglyceryl-2 Diisostearate do in products?

It emulsifies oil-water mixes, softens skin, and enables mild cleansing.

Is it suitable for sensitive skin?

Yes, it has low irritation potential for everyday use.

Can it cause acne?

No, with a comedogenic rating of zero, it's unlikely to clog pores.