PPD

AI-analyzed

INCI: P-PHENYLENEDIAMINE

hair dyeing

What it does

P-Phenylenediamine (PPD) is a common dye precursor used in permanent hair dyes to create long-lasting color. It reacts with other chemicals to form complex dyes that penetrate the hair shaft.

Skin Concerns

May aggravate

sensitivityrednesseczema

Safety & Science

Safety summary

PPD is a known sensitizer and can cause severe allergic reactions, especially in individuals with sensitive skin or a history of allergies to hair dyes. A patch test is strongly recommended 48 hours before use, and it is not intended for direct skin application.

CAS Number

106-50-3

Found In Products

Related Ingredients

For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.