Phenoxyethanol
Phenoxyethanol (CAS #122-99-6) is a synthetic preservative that has been used in cosmetics since around 1950. It is permitted worldwide at a maximum concentration of 1% (EU Cosmetic Restrictions V/29). While it can be found naturally in green tea, the cosmetic-grade version is synthetically produced. It offers broad formulation compatibility due to its thermal stability (up to 85°C) and effectiveness across a wide pH range (pH 3–10).
Phenoxyethanol is considered a safe and gentle preservative with a good safety profile. It is often paired with ethylhexylglycerin, which enhances its preservative activity. Its stability across a wide range of temperatures and pH levels makes it a versatile and widely used alternative to parabens.
Regulated to a maximum of 1% in cosmetic formulations worldwide (EU Cosmetic Restrictions V/29). No additional cautions are explicitly stated in the source.
