Preservatives are essential for preventing product spoilage, but they're a common cause of contact dermatitis (allergic skin reactions). The study reviews five major preservative classes—including parabens and formaldehyde-releasers—that dermatologists frequently see triggering allergic responses in patients, with varying sensitization rates depending on the chemical.

This is a literature review where researchers examined existing medical knowledge about preservative-related contact dermatitis, looking at prevalence rates, how allergic reactions appear on skin, testing methods, cross-reactions between chemicals, and current regulations across countries.

Funding not disclosed in abstract