What Is Propylparaben? Propylparaben is a preservative used in skincare and cosmetic formulations. Propylparaben is classed as a paraben, a group of preservatives with slightly different functions and anti-microbial activity based on their size. Other common parabens include methylparaben, butylparaben, isobutylparaben, and ethylparaben. If you’re researching mica, you might be looking for clean yet effective … Continue reading Propylparaben: Is It Safe To Use?