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Moumoujus

PEG-4 DIISOSTEARATE.

Valuable / SURFACTANT - EMULSIFYING

PEG-4 Diisostearate is a multifunctional polyethyleneglycol (PEG) ester that primarily functions as a surfactant and emulsifier. It facilitates the stable blending of oil and water phases, simultaneously enhancing product texture and contributing to skin moisture retention.

Summary

Surfactant Emulsifying Agent Emollient Humectant

Science

Mechanism of Action

As an advanced surfactant and emulsifying agent, PEG-4 Diisostearate reduces the interfacial tension between immiscible liquid phases, enabling the creation of stable emulsions. This action is crucial for optimizing product stability and texture. Furthermore, its chemical structure imparts emollient and humectant properties, aiding in the skin's moisture balance and potentially enhancing the dermal penetration of other active ingredients.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

This ingredient is highly effective in forming finely dispersed, stable emulsions, particularly for low-viscosity water-in-oil lotions, offering a light skin feel. It demonstrates excellent compatibility with high concentrations of silicone oils, such as Cyclopentasiloxane, and can be integrated into cold-processed formulations.

Synergies

  • Silicone oils (e.g., Cyclopentasiloxane)

Conflicts

  • Damaged or compromised skin barrier
  • Organic cosmetic certifications

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG-4 Diisostearate safe for use in cosmetic applications. However, its application on damaged or compromised skin is not recommended due to documented instances of systemic toxicity and contact dermatitis associated with PEG-based products in such conditions. Reputable suppliers ensure the elimination of impurities like ethylene oxide and 1,4-dioxane, making it safe for its intended use on intact skin. It is important to note that PEGs are generally excluded from certified organic formulations due to their petrochemical origin and the ethoxylation process involved in their manufacturing.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-4 Diisostearate is a valuable ingredient for its dual capacity to stabilize emulsions and enhance product texture, while also offering emollient and humectant benefits when applied to intact skin.

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