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PEG-60 CASTOR OIL ISOSTEARATE.

Valuable / SURFACTANT - EMULSIFYING

PEG-60 CASTOR OIL ISOSTEARATE is a multifunctional PEGylated derivative primarily utilized as an emulsifier to stabilize diverse oil-in-water formulations. This versatile ingredient also functions as a surfactant, assisting in cleansing, and a solubilizer, enabling the incorporation of challenging ingredients into aqueous systems. Additionally, it offers mild moisturizing benefits by supporting the skin's natural moisture barrier.

Summary

Emulsifying Surfactant Solubilizer Moisturizing

Science

Mechanism of Action

Operating as a robust emulsifier, PEG-60 CASTOR OIL ISOSTEARATE facilitates the stable dispersion of immiscible oil and water phases, which is critical for achieving consistent product textures in creams and lotions. Its surfactant properties contribute to reducing surface tension, thereby aiding in the effective removal of skin impurities. Furthermore, it acts as a solubilizer, enabling the uniform integration of lipophilic components such as essential oils and fragrances into aqueous solutions. On the skin, it forms a light occlusive layer that helps minimize transepidermal water loss, supporting sustained hydration.

Research

Clinical Evidence

High confidence
Effective range ≤100%
Optimal

N/A

Key findings

  1. 01 Jang HJ, Shin CY, Kim KB. Safety Evaluation of Polyethylene Glycol (PEG) Compounds for Cosmetic Use. Toxicol Res. 2015 Jun;31(2):105-36. doi: 10.5487/TR.2015.31.2.105.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 5.5 – 7
0 7 14

Stability

Exhibits robust solubility in water and miscibility with both aqueous and oil phases. Optimal stability for a 3% aqueous solution is observed within a pH range of 5.5 to 7.0.

Conflicts

  • Not advised for application near the inner nasal passages, ears, or on particularly compromised or hypersensitive skin areas, due to potential individual sensitivities.
  • Formulators must implement purification steps to control trace levels of process contaminants such as Ethylene Oxide and 1,4-Dioxane, byproducts of the ethoxylation process.

Safety

Safety Profile

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

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed the safety of PEG-60 Hydrogenated Castor Oil for cosmetic use at current concentrations, provided it is formulated to be non-irritating. This assessment is consistent with FDA approval for external applications and its classification as a permitted food additive for certain PEG Castor Oil ingredients. European Cosmetics Regulations also confirm its safety in cosmetic products. Trace amounts of 1,4-dioxane, a processing byproduct, should be mitigated through rigorous purification methods.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

This versatile ingredient is valuable for its critical role in stabilizing cosmetic emulsions, solubilizing diverse active compounds, and enhancing skin hydration, all while maintaining a favorable safety and low irritancy profile.

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