Phenoxyethanol

Phenoxyethanol – Broad-Spectrum Preservative for Modern Cosmetics

Phenoxyethanol is a widely used broad-spectrum preservative found in modern cosmetics, personal care, and pharmaceutical products. It is particularly valued for being formaldehyde-free, paraben-free, and effective at low concentrations (0.5%–1%). Phenoxyethanol provides protection against bacteria, yeast, and mold, making it ideal for emulsions, serums, and water-based systems. It is often combined with other preservatives (like ethylhexylglycerin) to boost performance in mild, low-irritation formulas. This ingredient is approved globally, including by the EU, FDA, and Japan.

INCI Name: Phenoxyethanol
CAS Number: 122-99-6
Solubility: Slightly soluble in water; soluble in alcohols and glycols
Add Phase: Cool-down phase (<40°C)
pH Stability: 3.0 – 10.0
Processing Temperature: Add below 40°C
Appearance: Clear, colorless liquid
Odor: Mild, rose-like
Molecular Formula: C8H10O2
Molecular Weight: 138.17 g/mol
Flash Point: ~120°C
Density: ~1.10 g/cm³
Chemical Type: Glycol ether
Functional Groups: Hydroxyl, Ether
Primary Cosmetic Uses: Preservative in creams, serums, shampoos, baby products, makeup