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POLYGLYCERYL-2 SESQUIOLEATE.

Valuable CAS - / SURFACTANT - EMULSIFYING

Polyglyceryl-2 Sesquioleate is a versatile polyglyceryl ester that primarily functions as a water-in-oil emulsifier and co-emulsifier, essential for formulating stable and luxurious skincare products. It also enhances the sensory experience by promoting rapid absorption and a smooth skin finish, while offering mild antimicrobial benefits.

Summary

Emulsifying Surfactant Skin Conditioning Antimicrobial Film Forming

Science

Mechanism of Action

This ingredient expertly reduces interfacial tension between immiscible oil and water phases, allowing for the formation of stable, homogeneous water-in-oil emulsions. On the skin, it conditions by improving moisture balance and contributing to a soft, smooth texture. Furthermore, its mild surfactant properties and selective antimicrobial activity against gram-positive bacteria support overall product integrity and hygiene.

Research

Clinical Evidence

High confidence
Effective range 0.5–5%
Optimal

2.0-4.0% (as primary W/O emulsifier)

Key findings

  1. 01 At concentrations from 0.5% to 4%, Polyglyceryl-2 Sesquioleate is an effective water-in-oil emulsifier and co-emulsifier, yielding stable, spreadable, and non-greasy emulsions with improved sensory attributes and fast absorption.
  2. 02 For primary water-in-oil emulsification, a range of 2.0% to 4.0% is recommended, creating lightweight creams with a luxurious feel that absorb quickly and spread easily.
  3. 03 It also serves effectively as a water-oil binder in various make-up formulations, typically at 1% to 5%, and as an oil-in-water film former between 0.5% and 1%.

Transparency

Dusting Analysis

Not commonly dusted

Information regarding 'dusting' or similar formulation issues related to this ingredient is not available in the provided research data.

The Formula

Formulation

Solubility
Oil
Optimal pH 4 – 8
0 7 14

Stability

Polyglyceryl-2 Sesquioleate demonstrates high chemical stability and can be incorporated into both cold and hot emulsion processes, though temperatures exceeding 80°C should be avoided. For optimal shelf life (minimum 2 years), store in a tightly closed container at room temperature (25-40°C), protected from direct sunlight or heat. It is compatible with a wide array of emollients, oil bases, including silicones, and ethanol concentrations up to 5%.

Synergies

  • Various emollients and oil bases (including silicone bases)

Conflicts

  • Not considered fungal acne safe

Safety

Safety Profile

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

The CIR Expert Panel concluded that polyglyceryl fatty acid esters, including Polyglyceryl-2 Sesquioleate, are safe for cosmetic use within current practices and concentrations, provided the final formulation is non-irritating. Typical use levels do not exceed 5%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A valuable W/O emulsifier and skin conditioner, Polyglyceryl-2 Sesquioleate is integral for creating stable, luxurious formulations with enhanced skin feel and absorption, particularly beneficial for dry, sensitive, and normal skin types.

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