PEG-6 Caprylic/Capric Glycerides
INCI: PEG-6 CAPRYLIC/CAPRIC GLYCERIDES
Reviewed by Kate · Last updated 2 Jun 2026
A solubilising agent that helps blend oil and water-based ingredients in formulations
Best For Skin Types
All
Usage Frequency
Daily
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What Is PEG-6 Caprylic/Capric Glycerides?
PEG-6 Caprylic/Capric Glycerides is a synthetic emulsifier derived from polyethylene glycol (PEG) and medium-chain fatty acids (caprylic and capric acids). It functions as a solubiliser, meaning it helps oil-soluble and water-soluble ingredients mix together smoothly in skincare formulations.
In cosmetic products, this ingredient works primarily behind the scenes to stabilise formulations and improve texture, rather than delivering direct benefits to the skin itself. It is found in approximately 0.6% of skincare products.
How It Works
PEG-6 Caprylic/Capric Glycerides acts as a bridge between incompatible ingredients. One end of its molecular structure is attracted to oils, whilst the other is attracted to water, allowing these normally separate components to blend together.
Research suggests it may also influence how active ingredients penetrate the skin when used in microemulsion formulations—very small droplets of oil suspended in water. Early studies indicate these systems can enhance delivery of certain actives through follicular pathways, though more research is needed to understand the full mechanisms and practical implications for everyday skincare.
Clinical Evidence & References
Limited clinical evidence exists specifically for this ingredient's direct effects on skin. Most research focuses on its technical role in enhancing the delivery of other active ingredients in laboratory and animal models rather than human skin studies.
In-vitro studies suggest that formulations containing PEG-6 Caprylic/Capric Glycerides may improve skin penetration of certain compounds when structured as microemulsions. However, this research is preliminary and conducted under controlled conditions that may not reflect real-world skincare use. More human studies would be needed to determine practical benefits.
Published Research
How to Use
This ingredient does not require special usage instructions as it is a formulatory component rather than an active ingredient. Simply use the product as directed by the manufacturer. If combining multiple products, follow the brand's guidance for layering and application order, as this ensures optimal formulation performance.
Safety & Precautions
Frequently Asked Questions
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