Back to Ingredient Dictionary

PENTANEDIONE

Description

Pentanedione, also known as 2,4-pentanedione or acetylacetone, is a versatile organic compound with applications in skincare formulations. This diketone molecule exhibits chelating properties, making it valuable as a stabilizer and preservative enhancer in various cosmetic products. Pentanedione's ability to form complexes with metal ions helps prevent oxidation and degradation of sensitive ingredients, thereby extending the shelf life of formulations.

In skincare, pentanedione serves as a pH adjuster, helping to maintain the optimal acidity of products for skin compatibility and ingredient efficacy. Its mild antimicrobial properties contribute to the overall preservation system, reducing the need for higher concentrations of traditional preservatives. Formulators often incorporate pentanedione in small amounts (typically less than 1%) to improve the stability of emulsions, serums, and creams.

While generally considered safe for cosmetic use, some individuals may experience sensitivity to pentanedione. As with any ingredient, patch testing is recommended before widespread application. It's important to note that pentanedione is distinct from its isomer, diacetyl, which has raised concerns in other industries. In skincare, pentanedione remains a useful tool for formulators seeking to enhance product stability and performance.