I had a reaction on the back of my neck to a hair dye which I had been using for 8 years. It had an alternative to ppd - ptds in it but that is close to ppd.
Anyway, I have tried a semi permanent to cover the grey hair I have but it doesn't do the job. Should I retry a hair dye which says it has a very low level of ppd in it? (After doing a patch test). I'd like to also highlight
my very dark hair so don't really want to go down the henna route.