Science
Mechanism of Action
This ingredient operates primarily as a non-ionic O/W (oil-in-water) emulsifier, facilitating the stable blend of hydrophobic and hydrophilic components within a formula. It also functions as a solubilizer and dispersing agent, ensuring uniform distribution of ingredients. As a humectant, its polyethylene glycol derivative structure enables it to form hydrogen bonds with water molecules, thereby delivering moisture to the skin and minimizing transepidermal water loss.
Research
Clinical Evidence
Medium confidence3%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
For optimal stability, PEG-15 Castor Oil should be stored in a cool, dry place, protected from light. A 3% aqueous solution typically maintains a pH between 6.0 and 7.5.
Conflicts
- strong oxidizing agents
Safety
Safety Profile
The CIR Expert Panel concluded that PEG-15 Castor Oil is safe for cosmetic use within current practices and concentrations, provided formulations are non-irritating. Trace amounts of 1,4-dioxane, a processing byproduct, are controlled through stringent purification. It is permissible under the EU Cosmetics Regulation and related PEG Castor Oils hold FDA approval for various indirect and direct food additive uses.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-15 Castor Oil is a valuable multifunctional ingredient, effectively serving as an emulsifier, solubilizer, and humectant, while maintaining low irritancy and comedogenicity for broad skin compatibility.
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