PEG Polyglyceride

PEG Polyglyceride – Versatile Non-Ionic Emulsifier for Cosmetic and Pharmaceutical Formulations

Chemical Structure and Synthesis
PEG polyglyceride is a non-ionic surfactant produced by the polyoxyethylation of polyglycerin with polyethylene oxide or by direct esterification of glycerol residues with polyethylene glycol (PEG). The resulting molecule combines hydrophilic polyethylene glycol (PEG) segments with polyglycerin groups, creating a highly amphiphilic structure with an excellent balance between water and oil compatibility.

Physicochemical Properties

• Amphiphilic nature – effectively reduces interfacial tension between oil and water phases.

• Non-ionic – compatible with a wide range of surfactants, ingredients, and pH levels; low skin irritation potential.

• Emulsifying activity – stabilizes oil-in-water (O/W) emulsions, providing fine, uniform textures.

• Thermal stability – maintains performance under normal processing and storage conditions.

• Biodegradable – environmentally friendly.

• Mild and skin-friendly – suitable for sensitive skin applications.

Applications

• Cosmetics and personal care: Creams, lotions, moisturizers, sunscreens, and makeup removers – provides stable, elegant O/W emulsions with excellent spreadability and a light, non-greasy feel.

• Pharmaceuticals: Used as an emulsifier and solubilizer in topical ointments, creams, and drug delivery systems.

• Other: Suitable for use in self-emulsifying systems and as a co-emulsifier in complex formulations.

Key Benefits

• Effective O/W emulsification with stable, fine textures.

• Improves product spreadability and sensory feel.

• Mild and non-irritating – suitable for sensitive skin.

• Biodegradable and environmentally friendly.

• Compatible with a wide range of cosmetic and pharmaceutical ingredients.

• Acts as a co-emulsifier and stabilizer in complex formulations.

Recommended Use
Typical usage levels range from 1–5% of the formulation, depending on the desired emulsion stability and viscosity. For optimal performance, incorporate into the oil phase at elevated temperatures (60–70°C) before emulsification. Can be combined with co-emulsifiers and thickeners for tailored rheology.

Safety and Handling

• Generally recognized as safe for use in cosmetics and pharmaceuticals at recommended concentrations.

• Low irritation potential; well-tolerated by skin.

• Avoid contact with strong oxidizers and acids.

• Store in a cool, dry place, away from direct sunlight.

• Use appropriate personal protective equipment (gloves, safety goggles) when handling.

Quality Assurance
Each batch is tested for purity, HLB value, and emulsification performance to ensure consistent quality.