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PEG-150 POLYGLYCERYL-2 TRISTEARATE.

Valuable CAS - / CLEANSING, SKIN CONDITIONING, SURFACTANT - EMULSIFYING

PEG-150 Polyglyceryl-2 Tristearate is a multifunctional ingredient primarily acting as an emulsifier, stabilizing oil and water mixtures. It also significantly contributes to formula viscosity, provides skin conditioning, and aids in solubilizing active components. This versatile compound is widely utilized across various cosmetic and personal care applications.

Summary

Emulsifying Viscosity Controlling Emollient Cleansing Skin Conditioning Humectant Solubilizer

Science

Mechanism of Action

This ingredient functions by reducing interfacial tension between immiscible liquids, effectively forming stable emulsions of oil and water. It contributes to product stability and texture by increasing viscosity. Additionally, it helps to maintain skin hydration as a humectant, keeps skin clean as a cleansing agent, and improves the overall condition of the skin. It also aids in dissolving other active ingredients within a formulation.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

No data available to suggest common dusting or associated thresholds for this ingredient in the provided research.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The ingredient demonstrates general stability but is susceptible to hydrolysis under strong acidic or alkaline conditions. For optimal integration into formulations, heating above its melting point (e.g., typically 60°C or 80-85°C, similar to related PEG-150 Distearate which melts at 52-57°C) is often required. Its solubility characteristics are notably improved when co-formulated with other surfactants, and certain commercial blends are designed for cold processing.

Synergies

  • Other surfactants (enhances solubility and dissolution)

Conflicts

  • Strong acids
  • Strong alkalis
  • Strong oxidants

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

While a direct review by the Cosmetic Ingredient Review (CIR) Expert Panel specifically for PEG-150 Polyglyceryl-2 Tristearate is not available, related ingredients such as PEG-150 Stearate have been deemed safe for cosmetic use within current concentration practices. Generally, this ingredient and other PEG derivatives are well tolerated by the skin in finished products. However, the raw material in solid form has the potential to cause irritation to the skin, eyes, and respiratory system. The presence of impurities like 1,4-dioxane, a by-product of ethylene oxide polymerization, is a consideration, but concentrations below 30 ppm are generally considered acceptable.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

PEG-150 Polyglyceryl-2 Tristearate is a valuable formulating agent due to its versatile emulsifying, thickening, and conditioning properties, generally well-tolerated across all skin types, making it suitable for a wide range of cosmetic products.

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