Phenoxyethanol
Phenoxyethanol is a widely used preservative in UK skincare and cosmetics that helps prevent bacteria, yeast and mould from growing in products. It is a clear, oily liquid that is gentle enough for most skin types when used at low levels, making it a common alternative to parabens. You'll find it in everything from moisturisers and serums to cleansers and mascaras.
How it works in skincare
In cosmetics and skincare, phenoxyethanol works as a broad-spectrum preservative by disrupting the cell membranes of microorganisms, thereby stopping them from multiplying and spoiling the product. It is particularly effective against gram-negative bacteria and is often combined with other preservatives such as ethylhexylglycerin to boost its activity. This allows formulations to remain stable and safe throughout their shelf life without relying on more controversial preservatives.
Key benefits
- Prevents microbial contamination in water-based formulas
- Extends product shelf life
- Allows for effective preservation at low concentrations
- Compatible with most skincare ingredients
- Generally well-tolerated by sensitive skin
- Common paraben-free preservative option
Best for
sensitive skin, normal skin, oily skin, combination skin, acne-prone skin
Where it comes from
Phenoxyethanol is a synthetic preservative produced by reacting phenol with ethylene oxide. While phenol can be derived from plant sources such as coal tar or certain essential oils, the cosmetic-grade version used in the UK is manufactured under controlled laboratory conditions.