Science
Mechanism of Action
This ingredient primarily improves skin feel and softness through its emollient properties. It effectively dissolves and disperses other substances within formulations. Analogous compounds like propylene glycol and PPG-15 Stearyl Ether are known to augment the penetration of active ingredients by interacting with and modifying the lipid structure of the stratum corneum.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PPG alkyl ethers, including PPG-9-Steareth-3, exhibit robust chemical stability and resistance across varying pH conditions. Optimal stability for related compounds such as PPG-15 Stearyl Ether is observed within the pH range of 6.0 to 8.0.
Synergies
- Enhances skin penetration of other ingredients
Safety
Safety Profile
The CIR Expert Panel concluded that PPGs, including PPG-9, are safe in cosmetic applications when formulated to be nonirritating. Specifically for PPG Stearyl Ethers, which includes PPG-9-Steareth-3, safety is affirmed for concentrations up to 25% when irritation is avoided. Propylene glycol is recognized as safe by the FDA (GRAS list). No specific SCCS evaluation for PPG-9-Steareth-3 was found.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PPG-9-Steareth-3 is a valuable emollient and skin conditioning agent, widely utilized across various cosmetic formulations, contingent on precise formulation to mitigate potential irritation.
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