Science
Mechanism of Action
This ingredient functions as a nonionic surfactant, effectively reducing surface tension to facilitate the formation and stability of emulsions. On the skin, it acts as a conditioning agent, working to diminish flaking and restore suppleness. It supports skin comfort by bolstering moisture retention, aiding in lipid replenishment, and improving overall skin smoothness, while also contributing antioxidant protection and strengthening the skin's lipid barrier to mitigate moisture loss.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Clinical evaluations at a 2% concentration demonstrated no dermal or ocular irritation, dermal sensitization, or photosensitization when incorporated into formulations.
Transparency
Dusting Analysis
PEG-5 Soy Sterol is typically a solid ingredient that melts at 74-88°C and functions as a surfactant, not commonly associated with 'dusting' in formulations.
The Formula
Formulation
Stability
Optimal stability and performance are observed within a pH range of 5.0 to 7.0, as indicated by its pH in a 1% aqueous dispersion at 25°C. The ingredient melts between 74 and 88°C.
Conflicts
- Not advised for application on damaged skin due to documented systemic toxicity and sensitization risks associated with PEGs used on burn patients.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed its safety for use in cosmetic products. Concentrations typically range from 0.05% in makeup to 2% in moisturizers. It is crucial to avoid use on damaged skin. Manufacturers must ensure the removal of potential 1,4-dioxane and unreacted ethylene oxide residues.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-5 Soy Sterol is a valuable multi-functional ingredient that not only stabilizes formulations but also significantly improves skin barrier function and hydration for dry and sensitive skin types, with a low risk of irritation.
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References
Sources