5-6 weeks ago I purchased a red hair dye from the L'Oreal Preference line. It came with a bottle that is to be used 2-3 weeks after colouring for a touch-up. I didn't do a skin test with this product because I've used this line in the past and I assumed that there would be no reaction. I didn't have a reaction to the actual hair dye itself (which I used immediately after purchasing), but I used the touch-up and had a reaction within a few hours - itchy scalp and hairline at first, which then developed into hives everywhere the next day.
My question is: how long will this reaction last? I used the touch-up 8-9 days ago and I still have hives. I think I've been seeing some slight improvements over the last few days but I've never had an allergy that's lasted longer than a day or two so I'm not too sure what to look for.
I've already gone to the doctor (around the 3rd or 4th day into the reaction) and I was told to just keep taking Benadryl and power through it but she didn't give me an estimate as to how long it'll last.
Hope this isn't a silly question. I work in a warehouse and although the allergy is not horrendously painful, it is a bit of a nuisance when I'm constantly scratching or rubbing against cardboard and wood. I'm just really hoping it will calm down soon.
EDIT: I thought I was seeing improvements, but shortly after posting this, I noticed something. My hives, which previously had just been red, itchy patches, are now swelling. Actually, even if I scratch my skin (a non-hive area), it will still swell. I washed my face and my one eyelid got a little bit puffy. Not sure what's happening here, I'm assuming this is a step backward though.
If anyone has any answers that might help me, please comment. I'm becoming more and more frustrated everyday.
Post Edited (cko3991) : 12/24/2016 9:22:29 PM (GMT-7)