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GLYCERYL STEARATE SE.

Valuable CAS 11099-07-3 / SURFACTANT - EMULSIFYING

Glyceryl Stearate SE is a versatile, self-emulsifying agent crucial for creating stable oil-in-water formulations, while also functioning as an emollient to enhance skin hydration and texture. It contributes to product stability, viscosity, and a pleasant sensory feel, making it indispensable in modern skincare.

Summary

emulsifying emollient stabilizer thickener pH balancer

Science

Mechanism of Action

Glyceryl Stearate SE primarily operates as a self-emulsifying agent, facilitating the stable blending of immiscible oil and water phases by reducing surface tension and forming a protective barrier around oil droplets. The 'SE' designation signifies the inclusion of alkali metal stearates, which enhances its self-emulsifying capabilities. Furthermore, it acts as an emollient, establishing a hydrating barrier on the skin's surface to minimize transepidermal water loss. Its multi-functional properties extend to stabilizing formulations, optimizing viscosity, and balancing pH to ensure product integrity and longevity.

Research

Clinical Evidence

High confidence
Effective range 1–5%
Optimal

N/A

Key findings

  1. 01 Human studies demonstrate no skin irritation or sensitization when used in formulations at concentrations ranging from 2% to 5%.
  2. 02 Effectively functions as a primary emulsifier in oil-in-water creams and lotions within a 3% to 5% concentration, contributing to formulation stability.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH 5 – 7
0 7 14

Stability

Glyceryl Stearate SE is chemically stable under normal storage conditions and tolerates a wider pH range compared to non-SE Glyceryl Stearate due to its anionic nature. For optimal dissolution and to prevent graininess, it should be added to the heated oil phase of formulations, typically maintained between 60-75°C.

Conflicts

  • strong oxidizing agents

Safety

Safety Profile

CIR Status
Safe as used
Max tested
12%
Pregnancy
Safe
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Glyceryl Stearate and Glyceryl Stearate SE are safe for use in cosmetic and personal care products at current concentrations. While concentrated pure forms may cause irritation, its use in cosmetic formulations carries a low risk of skin irritation. Glyceryl Stearate (non-SE) is also affirmed as Generally Recognized As Safe (GRAS) by the FDA as a direct food additive.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Glyceryl Stearate SE is a valuable multi-functional ingredient essential for creating stable, well-textured formulations while providing significant emollient benefits across all skin types.

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