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Moumoujus

PEG-9 OLEATE.

Valuable CAS 9004-96-0 / SURFACTANT - EMULSIFYING

PEG-9 Oleate is a multi-functional polyethylene glycol (PEG) ester primarily utilized as a surfactant and emulsifier, stabilizing complex oil-in-water formulations. It additionally offers emollient benefits, softening the skin, and can facilitate enhanced delivery of other ingredients.

Summary

Emulsifying Surfactant Emollient Humectant Penetration Enhancer

Science

Mechanism of Action

This compound primarily acts as an emulsifier by effectively lowering the interfacial tension between immiscible liquids, such as oil and water, enabling their stable dispersion. As a polyethylene glycol derivative, it provides emollient properties, contributing to skin softness and lubrication. Furthermore, PEG-9 Oleate functions as a humectant by forming hydrogen bonds with water molecules, thereby retaining moisture, supporting long-term hydration, and mitigating water evaporation. It also possesses a vehicle or penetration-enhancing effect, which can aid in the deeper delivery of other substances into the skin.

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

Conflicts

  • Can form complexes with active ingredients, potentially reducing their efficacy or bioavailability. Individual formulation testing is recommended to assess impact on active substance performance.
  • May exert a penetration-enhancing effect, which could increase the absorption of other ingredients, including potentially undesirable ones. This effect is influenced by the PEG's structure, molecular weight, other formula components, and the skin's condition.
  • Potential to disrupt the skin's natural moisture balance by altering its surface tension.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has broadly concluded that PEGs and various PEG compounds are 'relatively safe for use in cosmetics under the present conditions of intended use'. PEG fatty acid esters, including those similar to PEG-9 Oleate, are considered safe. Earlier concerns regarding PEGs on compromised skin were re-evaluated and removed in a 2010 review. PEG Oleate is also listed by the FDA as a surface-active agent for indirect food additive applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-9 Oleate is a valuable multi-functional ingredient for its emulsifying, emollient, and humectant properties, though formulators must meticulously assess its potential interactions with active ingredients and its penetration-enhancing effects.

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