Description

What is Ethylhexylglycerin?

Ethylhexylglycerin (INCI: Ethylhexylglycerin; CAS 70445-33-9), also known as octoxyglycerin, is a multifunctional cosmetic additive derived from glycerin and 2-ethylhexanol. It is supplied as a clear, colorless, nearly odorless liquid that combines the skin-conditioning properties of glycerin with the surface activity of an alkyl ether. Although regarded as a gentle ingredient rather than a standalone preservative, it is best known as a highly effective preservative booster: by reducing the interfacial tension at microbial cell membranes, it potentiates conventional preservatives such as phenoxyethanol, allowing formulators to lower the total preservative load while maintaining broad-spectrum protection. It also acts as a humectant, solvent and deodorizing agent and imparts a pleasant, smooth skin feel.

Key Benefits

• Preservative booster: enhances the efficacy of traditional preservative systems and supports broad-spectrum protection at lower use levels.
• Humectant and solvent: attracts moisture and helps solubilize and carry lipophilic ingredients and fragrances.
• Deodorizing support: helps inhibit odor-causing microorganisms in hygiene and underarm products.
• Smooth skin feel: conditions the skin and softens the impression of preservative blends.
• Paraben- and formaldehyde-free: supports modern, mild and clean-label formulations.
• Easy to formulate: a stable liquid compatible with a wide pH range and most cosmetic bases.
• Cost-efficient: effective at low addition levels with multiple functions in one ingredient.

FAQ

Q1: Is ethylhexylglycerin a preservative by itself? A1: It is primarily a preservative booster; it is normally combined with agents such as phenoxyethanol to provide reliable broad-spectrum protection.

Q2: How does it boost preservation? A2: Its alkyl glycerol structure lowers interfacial tension at microbial cell membranes, making companion preservatives more effective.

Q3: Is it suitable for sensitive skin and deodorants? A3: Yes — it is gentle, skin-conditioning and widely used in sensitive skin care and deodorizing products.