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PEG-40 DISTEARATE.

Valuable CAS - / SURFACTANT - EMULSIFYING

PEG-40 Distearate is a versatile non-ionic surfactant and emulsifier essential for blending oil and water phases in skincare formulations. It also acts as a humectant to attract moisture and a penetration enhancer, optimizing the delivery and efficacy of active ingredients.

Summary

Surfactant Emulsifier Humectant Cleansing Agent Solubilizer Viscosity Modifier Penetration Enhancer

Science

Mechanism of Action

Functioning as a non-ionic surfactant and emulsifier, PEG-40 Distearate reduces surface tension to enable the stable mixing of immiscible oil and water components. It draws and retains moisture as a humectant, acts as a cleansing agent, and solubilizes active ingredients and fragrances. Furthermore, it modifies viscosity, enhances the penetration of topical dermatological preparations, and forms a protective film to prevent moisture loss, contributing to moisturized and softened skin.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 A study demonstrated PEG-40 Stearate's effectiveness as a delivery vehicle for Trans-resveratrol, facilitating the formation of smaller liposomes and improving emulsifying properties, which enhances skin lightening applications.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

This ingredient exhibits enhanced chemical inertness and stability, making it suitable for a wide range of pH conditions and compatible with various active ingredients, emulsions, and solid dispersions.

Synergies

  • Acts as a penetration enhancer for other active ingredients, improving their delivery and efficacy.
  • Solubilizes active ingredients and fragrances, facilitating their incorporation into formulations.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
100%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that PEG-40 Stearate (and related PEG Stearates) is safe for cosmetic use, a finding reaffirmed in 2002. Animal studies showed only minimal skin and eye irritation at a 100% concentration, and clinical studies confirmed it is neither an irritant nor a sensitizer at concentrations of 25% or greater. Manufacturers must ensure the removal of impurities such as 1,4-dioxane and ethylene oxide. Use on damaged skin is not recommended.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-40 Distearate is a valuable multi-functional ingredient that enhances formulation stability, boosts active ingredient delivery, and contributes to skin hydration and softening.

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