My natural hair color is dark blonde to light brown.For years now i have has blonde highlights.Last winter i had my hairdresser color my hair brown.When summer came i was ready to go back to a heavier blonde highlight.This winter i went to my hairdresser and told her i was tired of coming in all the time because of my roots.She suggested a dark blonde color with a few highlights.When she was done it looked good.So i go back in 2 months and ask for blonde highlights only.She highlights my hair with another color plus a blonde and it's been 2 weeks and it looks brassy red to orange.I don't think she leaves the blonde on long enough because the blonde highlights look yellow.Anyway what i want is to be a heavier blonde on top without all this brassy color.What is the best way to achieve this and what is the best thing to put on my hair for split ends from all the coloring? Thanks