u/ArtsyDrawingss

I suspect I have a macadamia nut allergy. What is the proper protocol, if there is one, or the most effective way to completely remove it from my hair? I washed it thrice, but when I lay my hair on my back, my rash, which was a direct result of the hair product, has a burning sensation, and my throat feels like it's closing up. Knowing how to completely wash it off of clothes and bedding would be very useful too! Thank you in advance.