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POLYGLYCERYL-3 STEARATE.

Valuable CAS 27321-72-8 / 26855-43-6 / SURFACTANT - EMULSIFYING

Polyglyceryl-3 Stearate is a multi-functional, plant-derived non-ionic emulsifier essential for stabilizing complex cosmetic formulations. It efficiently combines immiscible oil and water phases while simultaneously offering significant skin-conditioning benefits. This ingredient enhances product texture and promotes effective delivery of active ingredients.

Summary

emulsifying skin conditioning surfactant

Science

Mechanism of Action

This ingredient functions primarily as a non-ionic emulsifier, crucial for forming and stabilizing both oil-in-water (O/W) and water-in-oil (W/O) emulsions, preventing ingredient separation. It also acts as a skin-conditioning agent, providing an emollient feel that softens and smooths the skin's surface. Its surfactant properties improve the overall texture and spreadability of products, ensuring even distribution and optimized absorption of other active components, while subtly contributing to skin hydration and elasticity.

Research

Clinical Evidence

High confidence
Effective range 0.1–6%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Polyglyceryl-3 Stearate is insoluble in water but readily dispersible in oils and various emulsions. It is soluble in solvents like ethanol, isopropyl alcohol, vegetable oils, and silicones, and can be dispersed in hot water. Typically incorporated into the oil phase, it has a melting point of approximately 55°C. It demonstrates stability under standard storage conditions (10-30°C in sealed, light-protected containers) and enhances the stability of formulations, proving compatible with a broad spectrum of surfactants and emulsifiers.

Synergies

  • Wide range of surfactants
  • Various emulsifiers

Safety

Safety Profile

CIR Status
Safe as used
Max tested
5%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed polyglyceryl fatty acid esters, including Polyglyceryl-3 Stearate, as safe for use in cosmetics at current concentrations, provided formulations are non-irritating. This ingredient is recognized as biodegradable, biocompatible, noncarcinogenic, and non-toxic, with no adverse effects observed at a test concentration of 5 wt%. It is considered safe and non-sensitizing for cosmetic applications and holds approvals from regulatory bodies like the FDA and the European Union, also possessing GRAS (Generally Recognized As Safe) status as a food additive. No specific SCCS opinion was identified.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Polyglyceryl-3 Stearate is a valuable ingredient, prized for its dual role in stabilizing emulsions and conditioning the skin, offering broad compatibility and an excellent safety profile for diverse cosmetic applications.

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