← Home

Is p-Phenylenediamine vegan?

p-Phenylenediamine (PPD) is a synthetic organic compound with the formula C6H4(NH2)2, used primarily as a component of engineering polymers and composites such as Kevlar. It is also widely used as an ingredient in hair dyes and is occasionally used as a substitute for henna. It is a white solid that can darken upon air oxidation.

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.