Propylparaben, the n-propyl
ester of
p-hydroxybenzoic acid, occurs as a
natural substance found in many plants and some insects, although it is manufactured synthetically for use in cosmetics, pharmaceuticals and foods. It is a
preservative typically found in many water-based cosmetics, such as creams, lotions, shampoos and bath products. As a food additive, it has the
E number E216.