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PEG-5 ETHYLHEXANOATE.

Valuable / SURFACTANT - EMULSIFYING

PEG-5 Ethylhexanoate is a polyethylene glycol derivative that primarily functions as an emulsifying agent and surfactant in skincare formulations, enabling the stable combination of oil and water-based ingredients. It is widely utilized for its ability to create uniform and consistent product textures.

Summary

Emulsifying agent Surfactant Humectant Emollient Solvent Solubilizer Consistency Enhancer Binding Agent Fixative

Science

Mechanism of Action

This ingredient works by reducing the interfacial tension between immiscible phases, such as oil and water, due to its molecular structure which possesses both lipophilic and hydrophilic components. This action stabilizes emulsions. Beyond its primary role as a surfactant, PEG-5 Ethylhexanoate can also act as a humectant to help retain moisture, an emollient to soften the skin, and a solvent to dissolve other formulation components.

Research

Clinical Evidence

Medium confidence
Effective range ≤2.5%
Optimal

Formulated effectively and safely up to 2.5%

Key findings

  1. 01 A related derivative, PEG-5 Soy Sterol, at 2% concentration in formulation, did not cause dermal or ocular irritation, dermal sensitization, or photosensitization in clinical studies.
  2. 02 When used at concentrations of ≤ 2.5% in cosmetic products, PEG-5 Ethylhexanoate is not considered to pose an unreasonable risk to public health. However, at higher concentrations (≤ 50%) during reformulation, it may pose a risk of skin and eye irritation to workers.

Transparency

Dusting Analysis

Not commonly dusted

No specific data suggests this ingredient is commonly associated with dusting concerns in consumer products or during typical formulation processes at recommended concentrations.

The Formula

Formulation

Solubility
Both
Optimal pH 4 – 9
0 7 14

Stability

The ingredient demonstrates stability under normal conditions of use, with no significant hydrolysis expected within the pH range of 4 to 9.

Conflicts

  • Damaged skin (due to observed potential for systemic toxicity and sensitization)
  • Organic cosmetic formulations (prohibited)
  • Presence of 1,4-dioxane and unreacted ethylene oxide residues (requires removal and purification during manufacturing)

Safety

Safety Profile

CIR Status
Safe as used with restrictions
Max tested
2.5%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) has generally concluded PEGs and their derivatives are safe for cosmetic use under current conditions of intended use. However, use on damaged skin is cautioned due to observed systemic toxicity and sensitization risks. It is essential for manufacturers to implement appropriate procedures to remove potential impurities like 1,4-dioxane and unreacted ethylene oxide residues. This ingredient is prohibited in organic cosmetics. EWG rates common concerns for PEG-5 Ethylhexanoate as 'LOW' for cancer, allergies & immunotoxicity, developmental and reproductive toxicity, and use restrictions. It is also designated as safe for general or specific, limited use in food by the FDA.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-5 Ethylhexanoate is a valuable formulation aid, primarily as an emulsifier and surfactant, suitable for most skin types at concentrations up to 2.5%, provided it is used on intact skin and purified from manufacturing byproducts.

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