Hi all, did a girls hair tonight, done it a few time now with the same colours but tonight they heated up so hot you could fry an egg on them. I used blonde me bleach with 9% and igora royal 10-1 with 12%. There was also lots of breakage which I expected but not from the bleach it was thetint that was breaking. Any ideas as to why? She was also using head and shoulders shampoo.