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PEG-10 STEARATE.

Valuable CAS 9004-99-3 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

PEG-10 Stearate is a precisely engineered polyethylene glycol ester that serves primarily as a nonionic emulsifier and surfactant, expertly blending oil and water phases within a formulation. It also provides significant skin conditioning benefits, contributing to enhanced hydration and smoothness.

Summary

emulsifying surfactant skin conditioning cleansing solubilizer thickener

Science

Mechanism of Action

As a versatile functional agent, PEG-10 Stearate operates primarily as an emulsifier and surfactant, facilitating the stable dispersion of oil in water, which is critical for product integrity and texture. Upon application, it conditions the skin by forming a subtle, protective lipid film. This film effectively mitigates transepidermal water loss (TEWL) and bolsters hydration levels, promoting a soft and supple skin feel. Its properties also extend to mild cleansing and solubilizing actions within the formulation.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

PEG-10 Stearate exhibits chemical stability and functions effectively as a nonionic emulsifier across neutral, mildly alkaline, and acidic pH systems. Its inherent microbiological stability often reduces or eliminates the necessity for supplementary preservatives in product formulations.

Conflicts

  • Not compatible with damaged or compromised skin, where it has shown potential for sensitization and nephrotoxicity.
  • Requires rigorous quality control during formulation to ensure minimal levels of residual ethylene oxide and 1,4-dioxane.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
25%
Sensitization risk Low

The CIR Expert Panel has concluded that PEG Stearates, including PEG-10 Stearate, are safe for cosmetic use at concentrations up to 25% when applied to intact skin. Clinical studies at this maximum concentration confirm a low risk of irritation or sensitization on healthy skin. However, it is critically important to avoid using PEG-10 Stearate on compromised or damaged skin, such as burns, due to documented instances of sensitization and nephrotoxicity in such cases. Additionally, strict manufacturing controls are required to ensure the absence of trace contaminants like ethylene oxide and 1,4-dioxane, which are potential by-products of its synthesis.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-10 Stearate is a valuable multi-functional ingredient, primarily serving as an effective emulsifier and skin conditioner while demonstrating low irritancy and broad skin compatibility on intact skin, provided formulation and usage precautions are observed.

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