Paraphenylenedeamine (PPDA) is an ingredient found in permanent hair dyes. This ingredient is mixed with an oxidizing agent, such as peroxide, before application. People allergic to PPDA should not use any permanent hair dyes. About one fourth of the people allergic to PPDA are also allergic to ingredients in semi-permanent dyes. Follow the package instructions for a patch test before using any hair dye. Most PPDA allergic people can use temporary dyes or rinses, to blend in gray and brighten hair. A few people, however, will react to these dyes also.
This is exactly what I have been experiencing! I have been using CPTG essential oils for over a year & all of a sudden a few moths ago I started having rashes with my lavender. I’m surprised because I’ve never had allergies or skin sensitivities before. Lavender is one of the most gentle oils & used for skin so I’m sad & frustrated about my reactions. Even diluted I get a rash. It’s also one of my favorites. I’m hoping I will be able to use it in the future. I’m glad I found this thread so at least I’m not alone!