Science
Mechanism of Action
This ingredient functions primarily as an oil-in-water emulsifier, effectively blending immiscible oil and water phases into stable emulsions. It additionally serves as a mild cleansing agent, an emollient to soften skin, a surfactant, a thickener, and a pigment dispersant. Its action promotes a soft finish on the skin and can enhance the skin's moisture balance.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Clinical evaluations confirm effective emulsification and stability, even at low concentrations, which significantly contributes to emulsion viscosity and reduces dependence on other thickening agents.
- 02 Human patch tests have demonstrated no irritation or sensitization.
- 03 While supplier recommendations for usage generally range from 0.5% to 3% depending on the specific application, this ingredient has been successfully evaluated at a 5.2% concentration in an exfoliant scrub under dermatological control.
Transparency
Dusting Analysis
As a formulation excipient and emulsifier, PEG-20 Methyl Glucose Sesquistearate is not an active ingredient subject to 'dusting' concerns related to efficacy or over-application thresholds.
The Formula
Formulation
Stability
It provides effective emulsification and stability, even at low concentrations, contributing significantly to emulsion viscosity. Maintaining a low acid value (typically a maximum of 1.5) is crucial for preserving emulsion stability. Formulations should avoid exposure to temperatures exceeding 80°C to prevent degradation.
Synergies
- Forms elegant, long-shelf-life oil-in-water emulsions with exceptional viscosity and stability when combined with Methyl Glucose Sesquistearate.
Safety
Safety Profile
In 2016, the Cosmetic Ingredient Review (CIR) Expert Panel concluded that PEG-20 Methyl Glucose Sesquistearate is safe for use in cosmetic applications. Prior concerns regarding its use in lipsticks due to a lack of oral toxicity data were addressed upon confirmation that it was not utilized in such products. The maximum use concentration of 15% applies to methyl glucose polyethers and esters collectively in both rinse-off and leave-on formulations. Its FDA designation as Generally Recognized as Safe (GRAS) pertains to its use as a food additive and is not directly applicable to cosmetic safety assessments.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-20 Methyl Glucose Sesquistearate is a highly valuable, well-tolerated multifunctional ingredient that enhances formulation stability and imparts a desirable soft skin feel across a wide range of precision skincare products.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources