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POLYGLYCERYL-2 STEARATE.

Valuable CAS 12694-22-3 / SURFACTANT - EMULSIFYING

Polyglyceryl-2 Stearate is a multi-functional ester primarily serving as an emulsifier to stabilize oil-in-water cosmetic formulations. It also acts as a skin conditioning agent, emollient, and texture enhancer, contributing to enhanced skin smoothness and hydration.

Summary

Emulsifying Surfactant Skin Conditioning Emollient Moisture Retention Protective Barrier Formation Texture Enhancing

Science

Mechanism of Action

This ingredient functions predominantly as an emulsifier, critical for creating and maintaining stable emulsions by preventing the separation of oil and water phases. It also exhibits surfactant properties, lowering surface tension to facilitate uniform ingredient dispersion. On the skin, Polyglyceryl-2 Stearate acts as a conditioning agent and emollient, imparting a soft, smooth feel and supporting moisture retention to prevent transepidermal water loss. Furthermore, it can contribute to a protective skin barrier and refine product consistency for a light, spreadable texture.

Research

Clinical Evidence

Low confidence
Effective range 1–5%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

Polyglyceryl-2 Stearate is primarily a functional ingredient (emulsifier, emollient, texture enhancer) rather than an active ingredient with a specific clinical efficacy threshold for targeted skin benefits. Its inclusion levels are typically determined by its role in product stability and aesthetic properties.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 9
0 7 14

Stability

Exhibits broad pH stability, performing effectively between pH 3 and 9, although some reports suggest optimal performance within a narrower 4-8 range. It demonstrates robust compatibility with various oil types, including vegetable oils, esters, mineral oil, and silicones. The ingredient also tolerates electrolytes, maintaining stability with up to 3% sodium chloride or divalent salts.

Synergies

  • Vegetable oils
  • Esters
  • Mineral oil
  • Silicones
  • Electrolytes (e.g., NaCl, divalent salts)

Safety

Safety Profile

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

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed Polyglyceryl-2 Stearate as safe for use within current cosmetic applications and concentrations (typically 1-5%). It is generally well-tolerated and considered non-irritating.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Polyglyceryl-2 Stearate is a valuable ingredient for its essential emulsifying capabilities, skin conditioning benefits, and texture enhancement, although its moderate comedogenic potential (rated 3/5) should be considered for acne-prone skin types.

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