Hi this is a question regarding my hair...I get foils which are 2 bleach to 1 6/01 mask lowlight...I am guilty of changing my lowlight to whatever I have in my hairdressing bag I usually use 7/0 or 7/1 sometimes 3 bleach to 1 lowlight but the last few time I have used the 6-01 however the ends of my hair look a dark greyish colour due to build up the first time I used the 6 I loved it now I am really unhappy I feel my bleach highlights are dull and I have golden bits obviously from the different colours. Anyone any recommendations of how to get rid of the build up in the ends without bleaching? The ends are in not the best condition.