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PEG-9 OLIVEATE.

Valuable CAS 226708-41-4 / SURFACTANT - EMULSIFYING

PEG-9 Oliveate is a versatile polyethylene glycol (PEG) derivative, primarily functioning as an emulsifier to ensure homogeneous blend of oil and water phases in skincare formulations. It also offers dual-action benefits as an emollient, enhancing skin smoothness, and a humectant, improving moisture retention for sustained hydration.

Summary

Emulsifying Emollient Humectant Skin-Conditioning Vehicle/Penetration Enhancer

Science

Mechanism of Action

PEG-9 Oliveate functions primarily as an emulsifier, expertly bridging immiscible water-based and oil-based components within cosmetic formulations to create stable emulsions. As a PEG derivative, it contributes emollient properties by lubricating and softening the skin's surface. Furthermore, it acts as a humectant, attracting and binding water molecules via hydrogen bonds to maintain skin hydration and mitigate trans-epidermal water loss. This ingredient can also enhance the delivery of other active ingredients into the skin, serving as a permeation vehicle.

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

While PEGs are generally stable, a 50% solution of PEG can exhibit a low pH, potentially reaching pH 3, due to the formation of oxidation byproducts. No specific optimal pH range for the stability of PEG-9 Oliveate in cosmetic formulations has been identified.

Conflicts

  • May form complexes with certain active ingredients, potentially reducing their efficacy or bioavailability, necessitating pre-formulation testing for optimal performance.
  • Its petrochemical origin and ethoxylation processing, which can generate trace amounts of 1,4-dioxane, render it unsuitable for certified organic cosmetic formulations.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has consistently deemed related PEG compounds, including PEG monoesters, safe for cosmetic applications at current usage concentrations. Although PEG-9 Oliveate was considered for re-review in 2014, broader assessments affirm the general safety of PEGs. Recent CIR updates have removed prior cautionary statements regarding the use of PEG-containing ingredients on compromised skin. While no specific maximum concentration for PEG-9 Oliveate is stipulated, related PEGylated oils have been considered safe for use up to 100%. GHS classification (OSHA HCS) indicates no specific hazards or precautionary statements associated with this ingredient.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-9 Oliveate is a valuable ingredient, effectively stabilizing emulsions while simultaneously providing skin with significant emollient and humectant benefits, suitable for a wide range of skin types and cosmetic applications.

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