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PEG-35 LANOLIN.

Valuable CAS 61790-81-6 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

PEG-35 Lanolin is a highly functional ethoxylated lanolin derivative valued for its dual role as a skin conditioning emollient and an effective auxiliary emulsifier. It enhances cosmetic formulations by providing a smooth skin feel and contributing to emulsion stability, supporting overall skin health and product performance.

Summary

emollient emulsifying surfactant hair conditioning skin conditioning cleansing agent solubilizing agent

Science

Mechanism of Action

This ingredient operates by reducing the surface tension of immiscible substances, thereby facilitating the creation and stability of emulsions. On the skin, it acts as a lubricant, imparting a soft, smooth appearance, and significantly minimizes the defatting action often associated with detergents. Furthermore, it forms a protective layer on the skin, which helps to prevent excessive water evaporation, indirectly boosting moisturization, and can assist in solubilizing fragrances while mitigating the irritancy of anionic surfactants.

Research

Clinical Evidence

High confidence
Effective range 10–100%
Optimal

60%

Key findings

  1. 01 In animal studies, PEG-35 Lanolin demonstrated mild to negligible skin irritation and was consistently nonsensitizing at concentrations ranging from 10% to 100%.
  2. 02 Human assays confirmed its non-irritating and non-sensitizing profile at concentrations up to 60%.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 2 – 10
0 7 14

Stability

PEG-35 Lanolin exhibits excellent stability across a wide pH range of 2-10, making it suitable for diverse formulations. It is completely water-soluble, forming clear solutions in aqueous systems. For optimal incorporation, it can be melted into the oil phase or dissolved directly into the aqueous phase, though prolonged heating above 80°C should be avoided.

Synergies

  • Aids in solubilizing fragrances.
  • Reduces the irritancy of anionic surfactants in detergent formulations.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
60%
Sensitization risk Low

The CIR Expert Panel has deemed PEG-35 Lanolin safe for use in cosmetic and personal care products. While small amounts of 1,4-dioxane, a by-product of the ethoxylation process, may be present, the FDA monitors purification practices to ensure cosmetic products do not contain unsafe levels.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-35 Lanolin is a valuable ingredient, effectively providing skin conditioning, emulsifying properties, and supporting formula stability across a broad range of cosmetic applications with a low risk of irritation or sensitization.

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