I just dyed my hair with clear ash color from Schwarkopf, I don't know if this a great brand, but since the salesgirl from the store told me to, so I tried it. Previously I just highlighted my black-dark brown hair with a light/medium brown by bleach in a salon, but I really don't like it since the color was way too much (or I just feel guilty after I highlighted it), so I want my natural hair color back, off course the highlight gone too. Should I just dye it with a dark brown color, or should I dye it with a black color? How many days should I wait to do another dye?

This is my previous color before any dye: https://www.dropbox.com/s/p1rdve0qwrj0g7m/Photo%2004-01-14%2014.17.06.jpg

This is after I highlighted my hair: https://www.dropbox.com/s/kc56qnsgfm0zty4/Photo%2004-01-14%2014.35.43.jpg

And after dyed it with the ash color: https://www.dropbox.com/s/4ryi6t56plr3vzt/Photo%2004-01-14%2014.28.37.jpg