Polyglyceryl-3 Stearate

What is Polyglyceryl-3 Stearate?

Polyglyceryl-3 stearate is a non-ionic surfactant and emulsifier created by esterifying stearic acid, typically sourced from vegetable oils like palm or soy, with polyglycerol-3, a polymer of glycerol. This results in a mild, water-dispersible ingredient commonly used in creams, lotions, cleansers, and makeup removers. In formulations, it works by lowering surface tension between oil and water phases, forming stable emulsions that prevent separation and ensure smooth textures. As an emollient, it provides a light coating on the skin to enhance slip and reduce water loss. Its surfactant properties aid in gentle cleansing by helping disperse oils and dirt. Valued for its compatibility with sensitive skin formulations, it appears in products needing reliable phase blending without irritation.

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

Helps create smooth, stable lotions and creams by emulsifying oils and water.

Softens skin surface for improved texture and feel.

Supports mild cleansing in washes 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 lightweight moisture.
Individuals with rare allergies to stearic acid derivatives.
Those preferring non-comedogenic ingredients for clear pores.
People sensitive to polyglycerol esters, though uncommon.
Users of emulsions like moisturizers and cleansers.
Those avoiding all synthetic-derived emulsifiers.

Safety Notes

  • Rated low hazard by safety assessments for cosmetic use.
  • Non-comedogenic and suitable for most skin types.

Frequently Asked Questions about Polyglyceryl-3 Stearate

What does polyglyceryl-3 stearate do in products?

It emulsifies oils and water for stable textures, softens skin, and aids gentle cleansing.

Is it safe for sensitive skin?

Yes, it's mild with low irritation potential per safety reviews.

Does it cause breakouts?

No, it has a comedogenic rating of zero.