Why did the foil and hair dye steam when I got my hair dyed?

I got a patch test and a strand test done which went fine - nothing weird happened. I used the same brand shampoo and conditioner as the company that makes the dye (L'oreal). I have also had my hair tinted in the past. The only different is that the dye we were using was tint with a little bit of bleach mixed... show more I got a patch test and a strand test done which went fine - nothing weird happened. I used the same brand shampoo and conditioner as the company that makes the dye (L'oreal). I have also had my hair tinted in the past. The only different is that the dye we were using was tint with a little bit of bleach mixed in. Why did my hair and the foil react weirdly? I also don't put any products in my hair.
1 answer 1