PSA: A simple color correction on a friend's hair took me two full days.
She wanted to go from a box black to a warm brown, said it would be easy. I started with a color remover, but it only lifted to a weird orange. Then I had to use a filler, but I picked the wrong tone and it went muddy. After that, I did two more rounds of color to get it right. What should have been a four hour job turned into a weekend project. Has anyone else had a filler color go totally wrong on them?