The first time I bought red lipstick, I spent an hour inside Sephora with a makeup artist. We tried on endless shades of red lipstick until we found the exact red that worked with my skin tone. It was Cruella by NARS - a matte, blue-based, red lip pencil. I always use this example when talking to anybody about the importance of trusting your hair color with a good colorist.
Just like there are endless shades of red lipstick, there are endless shades of brown, blonde and every other hair color in between. The same color principles in art and design apply to hair color, it's just different paint and a different canvas and quite a bit of science thrown in the mix.
graphics designed by Becca Clason