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PEG-50 HYDROGENATED CASTOR OIL.

Valuable CAS 61788-85-0 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

PEG-50 Hydrogenated Castor Oil is a multi-functional non-ionic surfactant crucial for creating stable and effective skincare and cosmetic formulations. It expertly blends oil and water, solubilizes various ingredients, and contributes to maintaining optimal product texture and stability.

Summary

emulsifying solubilizer wetting agent skin conditioning agent surfactant

Science

Mechanism of Action

Operating primarily as a surfactant, PEG-50 Hydrogenated Castor Oil functions effectively as an emulsifier, enabling immiscible oil and water phases to combine and maintain stability by lowering interfacial tension. It also serves as a solubilizer, facilitating the dissolution of active compounds, fragrances, and colorants within aqueous formulations. Beyond its functional roles, it contributes to skin conditioning, helping to preserve the skin's overall health and appearance.

Research

Clinical Evidence

High confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 The Cosmetic Ingredient Review (CIR) Expert Panel has extensively affirmed the safety of PEG-50 Hydrogenated Castor Oil and related PEGylated oils (PEG-30 and PEG-40 Hydrogenated Castor Oil) for cosmetic use, particularly when formulated to be non-irritating. These reviews, while primarily addressing safety, indirectly support its functional efficacy in formulations at high concentrations, up to 100% for related compounds.

Transparency

Dusting Analysis

Not commonly dusted

There is no available data to suggest that PEG-50 Hydrogenated Castor Oil is commonly 'dusted' or overhyped for benefits it does not provide. Its roles are well-understood functional contributions to formulation stability and ingredient solubilization.

The Formula

Formulation

Solubility
Water
Optimal pH 3.5 – 9
0 7 14

Stability

As a non-ionic surfactant, PEG-50 Hydrogenated Castor Oil exhibits robust activity and stability across a broad pH range, from acidic (pH 3.5) to alkaline (pH 9.0) conditions. Its inherent resistance to oxidation and chemical degradation further contributes to prolonged product shelf life, ensuring sustained efficacy, desirable texture, and intended scent in formulations.

Safety

Safety Profile

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

The CIR Expert Panel has concluded that PEG-50 Hydrogenated Castor Oil, among 130 PEGylated oil ingredients, is safe for use in cosmetic practices when formulated to be non-irritating. This comprehensive conclusion supersedes an earlier 1997 assessment. While the potential for trace amounts of 1,4-dioxane, a by-product of the ethoxylation process, is recognized, manufacturers can effectively control this through purification steps. Notably, the base castor oil and related PEG-30 and PEG-40 Hydrogenated Castor Oils are approved by the FDA as direct and indirect food additives, indicating a broad safety profile.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A versatile and well-tolerated non-ionic surfactant, PEG-50 Hydrogenated Castor Oil is invaluable for stabilizing diverse cosmetic formulations, solubilizing key ingredients, and ensuring overall product integrity, with a broad safety profile confirmed by expert panels.

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