Paraphenylenediamine (PPD), is another ingredient found within most traditional hair coloring products. Most cases of allergic contact dermatitis stemming from exposure to hair dye are caused by PPD. PPD is a chemical that’s also found in temporary tattoo ink, printer ink, and gasoline. In boxed hair dye, PPD usually comes in its own bottle, accompanied by an oxidizer. When both are mixed together, PPD becomes partially oxidized. This is when it’s likely to cause allergic reactions in people who are sensitive to it.
So what's the best plan of action, then? It's to choose the healthiest option, not only for our hair but for bodies too. After all, hair dye can come in direct contact with our skin, and we're all about erring on the side of caution. Conventional hair dyes are fine unless a clients has damaged or weakened hair. In my professional opinion, organic hair dye is less harsh on your hair and should be used if there are any concerns for your hair and skin health.