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Moumoujus

PEG-8 HYDROGENATED CASTOR OIL.

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

PEG-8 Hydrogenated Castor Oil is a multi-functional ethoxylated derivative of hydrogenated castor oil, acting primarily as a surfactant and emulsifier to stabilize formulations, while also delivering emollient and hydrating benefits to the skin.

Summary

Emulsifying Surfactant Solubilizing Emollient Occlusive Anti-inflammatory Sebum-balancing

Science

Mechanism of Action

This ingredient functions as a robust surfactant, significantly reducing surface tension between immiscible liquids, thereby enabling the stable emulsification of oil and water phases in cosmetic preparations. It effectively solubilizes oil-soluble components like fragrances and essential oils within water-based systems. On the skin, it forms a protective occlusive layer, aiding in moisture retention and deep nourishment. Furthermore, it exhibits anti-inflammatory properties that can soothe sensitive skin and helps regulate sebum production for oily skin without contributing to pore congestion.

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

A stable ingredient, PEG-8 Hydrogenated Castor Oil enhances overall product stability and clarity. For optimal integration, similar PEGylated castor oils (e.g., PEG-40 Hydrogenated Castor Oil) can be pre-blended into the oil phase at a 3:1 ratio (PEG to oil) in its cold state before combining with the water phase. It is also suitable for formulations with low alcohol content.

Synergies

  • Oil-soluble ingredients (e.g., fragrances, essential oils) for enhanced solubilization.

Safety

Safety Profile

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

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed 130 related PEGylated oils, including PEG-8 Hydrogenated Castor Oil, safe for cosmetic use at current concentrations, provided formulations are non-irritating. While generally indicating 'low' irritation, the CIR noted 'weight of evidence unknown/unassessed' for skin, eye, or lung irritation in broader contexts. Potential concerns regarding 1,4-dioxane contamination, a by-product of ethoxylation, are typically mitigated through standard purification processes. Related ingredients like PEG-30 and -40 Hydrogenated Castor Oil hold FDA approval for direct and indirect food additive uses.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A versatile PEGylated castor oil derivative, PEG-8 Hydrogenated Castor Oil functions as an effective emulsifier, solubilizer, and emollient, widely compatible across all skin types with a low risk of irritation or comedogenicity.

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