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PEG-90 DIISOSTEARATE.

Valuable / CLEANSING

PEG-90 DIISOSTEARATE is a versatile polyoxyethylene glycol diester that functions primarily as an emulsifier, solubilizer, and skin-conditioning agent. It is crucial for stabilizing immiscible oil and water phases in formulations, ensuring uniform product consistency, and enhancing the sensory experience with a soft, non-greasy feel.

Summary

Emulsifying Solubilizing Skin-Conditioning Surfactant Viscosity Enhancing

Science

Mechanism of Action

On a molecular level, PEG-90 DIISOSTEARATE effectively stabilizes oil-in-water systems by reducing interfacial tension, allowing lipophilic ingredients to disperse evenly within aqueous matrices. Its humectant properties facilitate moisture retention in the skin by forming hydrogen bonds with water molecules, thereby reducing transepidermal water loss and contributing to skin barrier protection. In cleansing formulations, it mitigates potential irritation from stronger surfactants, supporting a milder product profile, contributing to a creamy foam, and improving overall texture. Additionally, it aids in the transdermal delivery of lipophilic active compounds by improving their absorption into the skin.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The ingredient is readily and clearly soluble in water, allowing for flexible integration at any stage in aqueous formulations and supporting continuous production processes. It actively contributes to formulation stability and ensures the uniform distribution of ingredients. Avoid exposure to strong oxidizing agents and prolonged heat.

Conflicts

  • strong oxidizing agents
  • prolonged heat

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that PEG diesters, including PEG-90 DIISOSTEARATE, are safe for use in cosmetics when formulated to be non-irritating. PEGs are generally considered minimally irritating, not sensitizing, mutagenic, or carcinogenic. Significant skin penetration is limited to severely compromised skin (e.g., second and third-degree burns). While concerns about potential impurities like ethylene oxide and 1,4-dioxane exist, these are controlled through stringent purification processes during manufacturing. No specific maximum concentration was provided, with the 'safe as used' conclusion indicating acceptable current cosmetic use levels.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-90 DIISOSTEARATE is a valuable, multifunctional ingredient that enhances formulation stability and sensory attributes, while offering skin-conditioning benefits particularly for dry and sensitive skin types.

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