In chemical terms, cationic means positively charged. Quaternary ammonium compounds, like those found in the PureWorks products, are cationic. This positive charge is partially responsible for the attraction of these ingredients to the skin, which possesses negatively charged molecules. This attraction to the skin is the reason for the quaternary ammonium compounds persistence, or lingering presence. This can result in prolonged protection and conditioning of the skin for an extended period following application.