Just did the same color 4 days ago, me having your exact same background hair color allergies... did the patch test which was negative with at the end of course, once on my hair, 24hours later, I got the same results =(
It's ugly, itchy but nothing like my last bad reaction I had years ago to real hairdye (oh my thank gosh).
I was very surprise but also very sad that Manic Panic gave me this reaction as I used to have MP purple on bleached hair for years. So I have a question for you... since you wrote this a while ago, did you find any vibrant color you can use safely or are we stuck with the old Jazzing... which at the end is better than nothing.
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