MarketplaceBlack MehndiPosted on March 14, 2010. I used black mehndi (henna) and now my skin swollen and burns. It really hurts, what should I do? The use of henna can lead to allergic contact dermatitis (similar to the rash you get with poison ivy). It seems that if you have developed. The gold standard for treatment either with the use of cortisone. The only addition to the cortisone cons you would have access to hydrocortisone, which may not be strong enough for what you are experiencing. If so, then you will need to see your dermatologist for stronger medicine. In addition, I think you'll be left with an area of post inflammatory hyperpigmentation in the field of allergic reaction, which will take some time to decide. Most people are allergic to henna allergy cross sensitivity with p-phenylenediamine, which is present in hair dyes. So be very careful to never die your hair black. Good morning. ... Black henna is dangerous. D You are allergic. use this cream: CommentsThere are no comments.Leave a Comment | Popular Articles External Links |