Science
Mechanism of Action
Functioning as an emollient, PPG-3-ISOSTEARETH-9 enhances skin comfort by providing excellent spreading properties and an exceptionally weightless sensation upon application. As a PPG derivative, it is adept at solubilizing various cosmetic components. While direct efficacy studies for this specific compound are not detailed, related glycols like propylene glycol are understood to potentially enhance ingredient penetration by interacting with stratum corneum lipids, increasing their fluidity and disorder, and possibly aiding in the extraction of cholesterol to boost overall skin permeability.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
No information suggests that PPG-3-ISOSTEARETH-9 is commonly included in formulations at sub-functional concentrations merely for label appeal.
The Formula
Formulation
Stability
This ingredient, or a very similar chemical entity, demonstrates extreme tolerance to a wide pH range, indicating high stability in diverse formulation environments.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has determined that 'Alkyl PEG/PPG Ethers,' which includes PPG-3-ISOSTEARETH-9, are safe for use in cosmetics, provided formulations are designed to be non-irritating. Polypropylene glycols typically exhibit very good skin tolerance. However, some environmental concerns exist, with certain sources classifying PPGs as 'sceptical microplastics' due to their synthetic polymer nature and potentially limited environmental impact data. Furthermore, as an ethoxylated ingredient, general discussions regarding potential residual ethylene oxide from its manufacturing process are noted.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PPG-3-ISOSTEARETH-9 is a valuable ingredient for enhancing skin feel, improving spreadability, and solubilizing other components, provided it is incorporated into non-irritating formulations.
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