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PEG-75 CASTOR OIL.

Valuable CAS 61791-12-6 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

PEG-75 Castor Oil is a polyoxyethylene derivative of castor oil, functioning primarily as a versatile emulsifier, solubilizer, and humectant in skincare formulations. It facilitates the stable blending of oil and water components, while also providing moisturizing and softening benefits to the skin and hair.

Summary

Emulsifying Solubilizer Humectant Binding Softening Moisturizing Solvent Surfactant

Science

Mechanism of Action

As a non-ionic polyoxyethylene derivative, PEG-75 Castor Oil acts as a surfactant, reducing surface tension to effectively emulsify immiscible phases like oil and water. This allows for stable cosmetic formulations with improved texture and 'slip.' It also draws moisture into the skin as a humectant, contributes softening properties, and serves as a solvent, enhancing the dissolution of other ingredients within a product.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5.5 – 7
0 7 14

Stability

This non-ionic ingredient maintains its activity across an optimal pH range of 5.5 to 7.0, remaining stable in both acidic and alkaline conditions. For optimal emulsion stability, it is typically incorporated into the oil phase of a formulation, gently heated, and then thoroughly blended with the water phase.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that PEG-75 Castor Oil is safe for cosmetic use in current concentrations, provided formulations are designed to be non-irritating. Manufacturers must ensure purification procedures are in place to address potential impurities like ethylene oxide and 1,4-dioxane. While generally considered to have low irritancy, it is advisable to avoid use on broken or damaged skin.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-75 Castor Oil is a valuable multi-functional ingredient offering significant formulation benefits as an emulsifier, solubilizer, and humectant, though its moderate comedogenicity should be considered for acne-prone skin.

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