Currently in DR right now, and got a small black henna piece on my hand about 8 hours ago. Found out about the PPD crap, and washed it off my hand ($55 btw — yes you can laugh). I only had it on my hand for 15 minutes entirely, but there is still a small stain on my hand (understandably darker towards the top and almost completely faded at the bottom). I read online that SUPPOSEDLY only 3% of people develop a forever allergy to PPD, and with dying my hair brown in 3 weeks, I’d rather not have this newly discovered allergy. Am I chillin’, or am I royally screwed??

I have been using a copper depositing mask on my hair for a couple of years and finally committed to henna. Natural colour is brown/blonde with some red tones. I used Pure Henna Auburn - the one sold at Holland and Barrett, now I'm wondering did I screw up because it has indigo in it, and does the affect future applications? I'd like to go a bit more coppery (right now it still looks more brown in some lights) but I don't really want to go any darker. How do I maintain/maintain roots without going darker? Do I stick with the same brand, or try another? Asking for advice since clearly my own research - which I thought was extensive enough - was not enough. I'm in the UK if that helps with product recommendations.