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PEG-25 PROPYLENE GLYCOL STEARATE.

Valuable CAS - / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

PEG-25 Propylene Glycol Stearate is a versatile ingredient that serves as an emulsifier, surfactant, and skin conditioning agent. It is crucial for stabilizing formulations, enabling effective cleansing, and imparting a smooth, hydrated feel to the skin.

Summary

Emulsifier Surfactant Cleansing Agent Emollient Humectant Solubilizer

Science

Mechanism of Action

This ingredient functions primarily as a surfactant, allowing otherwise immiscible substances like oil and water to combine, which is essential for stable emulsions and thorough cleansing. It reduces interfacial tension to create and maintain uniform mixtures. Additionally, it acts as a skin conditioning agent, providing emollient benefits for a soft skin texture, enhancing hydration as a humectant, and serving as a lubricant. It can also improve the dissolution and potential penetration of other active compounds.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Classified as nonallergenic in sensitization tests at concentrations of 25-50% in petrolatum.
  2. 02 Demonstrated negative results in clinical patch tests at undisclosed concentrations.
  3. 03 An antiperspirant product containing 2.0% of this ingredient was nonirritating to mildly irritating to the eyes and practically nonirritating to the skin.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Polyethylene glycols generally exhibit stability across a range of temperatures, acids, and bases. The water solubility and hygroscopicity of PEG derivatives typically decrease with increasing molar mass.

Synergies

  • Enhances the solubility and potentially the absorption/penetration of other active ingredients.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that PEG-25 Propylene Glycol Stearate is safe when used in cosmetic formulations at concentrations not exceeding 10%. An earlier caution regarding the use of PEG-containing ingredients on damaged skin was removed in an amended safety assessment in 2016. However, some sources still recommend caution and patch-testing for individuals with exceptionally sensitive skin, a general best practice for any new topical product. Manufacturers are expected to control for potential trace impurities, such as 1,4-dioxane and ethylene oxide, through purification processes to minimize their levels, adhering to FDA guidelines.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-25 Propylene Glycol Stearate is a valuable ingredient, effectively stabilizing formulations and enhancing skin feel through its emulsifying, cleansing, and conditioning properties, with a strong safety profile at recommended concentrations.

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