So, I dyed my hair the other night, and last night my face started reacting to it. 

I've got a rash on my face and my ears from the dye, and it burns slightly. I woke up this morning and my eye was slightly swollen.

According to one website, people can react within the first few seconds of contact with the dye or it can take hours or days. I'm with the latter.

I'm never dying my hair again. 

*P.S. I suggest you do a patch test before dying your hair if you ever do!*