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POLYGLYCERYL-10 STEARATE.

Valuable CAS 79777-30-3 / SKIN CONDITIONING

Polyglyceryl-10 Stearate is a multifunctional ester that primarily functions as an effective emulsifier, enabling the stable blending of disparate oil and water phases within skincare formulations. Beyond its structural role, it delivers notable moisturizing and skin-conditioning benefits, enhancing epidermal hydration and texture.

Summary

Emulsifying Surfactant Moisturizing Skin-Conditioning Emollient Cleansing Agent Solubilizer Texturizer

Science

Mechanism of Action

This polyglyceryl ester operates fundamentally as an emulsifier and surfactant, reducing the surface tension between immiscible liquids to stabilize emulsions and improve product consistency. As a gentle surfactant, it aids in the removal of impurities without compromising the skin's integral moisture barrier. Furthermore, it functions as an emollient and skin-conditioning agent, forming a subtle, protective layer on the skin that effectively locks in moisture, thereby preventing transepidermal water loss and reinforcing the skin's natural barrier for sustained hydration and smoothness.

Research

Clinical Evidence

High confidence
Effective range 1–10%
Optimal

1%

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 3 – 10
0 7 14

Stability

Polyglyceryl-10 Stearate is readily dispersible in water and exhibits strong hygroscopic properties, forming a stable cyclopolymerized structure that effectively entraps water within aqueous formulations. This contributes to its long-lasting and highly stable nature. For optimal processing, it is recommended to incorporate it into the oil phase and heat to approximately 55°C, while strictly avoiding temperatures exceeding 80°C. It functions effectively as a co-emulsifier in water-in-oil (W/O) systems and promotes a lamellar structure, which intrinsically enhances both product stability and skin feel.

Synergies

  • Good compatibility with electrolytes
  • Promotes lamellar structures for improved product stability and feel

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Polyglyceryl-10 Stearate, alongside numerous other polyglyceryl fatty acid esters, is safe for use in cosmetics at current concentrations, provided the final formulations are non-irritating. It is also recognized as safe by European Cosmetics Regulation and is classified with a low safety risk by the Environmental Working Group (EWG).

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Polyglyceryl-10 Stearate is a valuable, highly versatile, and safe ingredient that adeptly stabilizes formulations while concurrently delivering significant moisturizing and skin-conditioning benefits across a broad spectrum of skin types.

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