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PEG-16 CASTOR OIL DIOLEATE.

Valuable CAS 714216-77-0 / SURFACTANT - CLEANSING

PEG-16 Castor Oil Dioleate is a polyoxyethylated derivative of castor oil primarily utilized for its exceptional emulsifying, solubilizing, and surfactant properties in cosmetic formulations. It efficiently blends oil and water components, disperses oil-soluble ingredients, and reduces surface tension, enhancing product stability and application.

Summary

Emulsifier Solubilizer Surfactant Cleansing Agent Conditioning Agent Viscosity Modifier

Science

Mechanism of Action

This ingredient operates as a multifaceted functional agent. As an emulsifier, it reduces interfacial tension between immiscible liquids, stabilizing oil-in-water or water-in-oil emulsions and improving product consistency. Its role as a solubilizer allows it to uniformly disperse lipophilic substances, such as fragrances or essential oils, into aqueous solutions, resulting in clear formulations. Furthermore, as a surfactant, it lowers the surface tension of a product, facilitating an even spread and enhancing cleansing properties. The intrinsic castor oil component may also impart subtle conditioning and emollient benefits to the skin and hair.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 While specific efficacy data for PEG-16 Castor Oil Dioleate are not detailed, safety evaluations by the CIR Expert Panel for related PEG Castor Oils (e.g., PEG-30, -33, -35, -36, -40 Castor Oil) found them safe for use in cosmetics at concentrations up to 50%. Related PEG Hydrogenated Castor Oils (PEG-30 and -40 Hydrogenated Castor Oil) were deemed safe up to 100%. The broader category of PEGylated oils, including PEG-16 Castor Oil, is considered safe when formulated to be non-irritating.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

PEG-16 Castor Oil Dioleate is water-soluble and is typically incorporated into the water phase of a formulation. While specific pH stability for this exact compound is not provided, related PEG-40 Hydrogenated Castor Oil exhibits stability within a pH range of 5.5-7 (at 3% in water). This ingredient is non-ionic, allowing for broad compatibility with non-ionic, anionic, and cationic ingredients.

Synergies

  • Compatible with non-ionic, anionic, and cationic ingredients.

Conflicts

  • Formulations containing this ingredient should be avoided on broken or damaged skin, as PEG compounds can potentially cause irritation in such compromised conditions.
  • Manufacturers must ensure stringent purification procedures to control and remove potential impurities such as ethylene oxide and 1,4-dioxane, which are by-products of the ethoxylation process.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Unknown

The CIR Expert Panel concluded that PEGylated oils, including PEG-16 Castor Oil, are safe for cosmetic use when formulated to be non-irritating. However, there are concerns regarding potential impurities like ethylene oxide and 1,4-dioxane, necessitating their removal through purification. While PEGs generally exhibit low to no irritation on healthy skin, caution is advised for use on broken or damaged skin. Related Castor Oil is an FDA-approved flavoring agent, and PEG Castor Oil ingredients may be used as indirect food additives. European regulations permit the use of PEG Castor Oils and PEG Hydrogenated Castor Oils under general cosmetic provisions.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

PEG-16 Castor Oil Dioleate is a valuable functional ingredient for formulators, providing essential emulsifying, solubilizing, and surfactant capabilities, with safety contingent upon proper formulation and impurity control.

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