Tatiana had colored her natural brown her herself with a lighter color. Unfurtunally it seemed a little bleached out, leaving her light her damaged and out of shape. So she wanted to get a color correction for her hair, and get a more natural vibe to her it again.
Yoshiko used a semi-permanent dark ash color than matched her requirements. The semi-permanent isn’t as rough on the hair as permanent color, thus being a bit kinder to her delicate hair. Afterwards the damaged ends were trimmed out, giving her hair a more vibrant appearance.
Getting your hair highligted can often be great, but going back to the roots and taking a more natural style can really look good. Like in this case. The hairstyle itself didn’t change that much, but elegance was definitely achieved.