I went to Lisa at Ruby 6 in the Village for the first time after getting an orange tinted one-process dye job (pictured in below top left frame). I wanted a deep red, but in the sun, my hair took on a hue that mimicked a SF Giants jersey that had been washed 10000 times. Although I'm pale, I have an olive skin tone, and my hair just made me look washed out and a little green.
I found Lisa in a NY magazine review... I went in for consult and she asked:
"They let you leave the salon like that?"
She noted that the top of my head was a few shades lighter than the bottom, and said, "Did they at least acknowledged they did something wrong?"
She assured me it was easy to fix. She (unlike the other salon) let my roots set for longer, and painted parts of my hair at different intervals. It came out an even rich Auburn that put a smile back on my face. I even made Lisa's Facebook page :)