Science
Mechanism of Action
This ingredient primarily functions as a surfactant and emulsifier, reducing the surface tension between immiscible oil and water phases to form and stabilize emulsions. Its molecular structure allows it to act as an emollient, softening and lubricating the skin surface, and as a humectant, drawing and retaining moisture via hydrogen bonding to mitigate transepidermal water loss. Furthermore, PEG-14 Stearate can serve as a vehicle, potentially facilitating enhanced penetration of other active ingredients into the skin.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 When tested as part of a formulated product, a 3% concentration demonstrated no evidence of photo-allergy, photo-toxicity, nor of sensitization.
- 02 As part of the PEG Stearates class, concentrations up to 25% were found to be neither irritating nor sensitizing in clinical studies.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal pH for a 3% solution is within the 5.5-7 range, with tolerance for a final pH between approximately 4 and 9.
Conflicts
- strong acids
- bases
- oxidizing agents
- high temperatures
- open flames
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that PEG Stearates, including PEG-14 Stearate, are safe for use in cosmetics at concentrations up to 25%. Clinical evaluations show no irritation or sensitization at these levels. While EWG assigns a low hazard rating across several toxicity categories, it is important to acknowledge that PEGs may, in general, contain trace impurities like ethylene oxide and 1,4-dioxane.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-14 Stearate is a valuable ingredient for stabilizing formulations, enhancing skin hydration, and promoting a smooth texture, with a well-established safety profile up to 25% concentration.
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