How can i fade my coloured hair?

I'm afraid if you want to go from dark to blonde visit the hair dressers. I dyed my hair black for a year, and boy did I regret it at the end. I had to have a full head of highlights with a toner to bring up only a few shades of my hair, if you do it in one go it will seriously damage your hair. And if you go to somewhere who says it doesn't are lying. It is the only way you will remove that reddish tone. Get it done once, bring up a few shades with it, and they will be able to even the colour for you also. Then wait a few months, then you can either dye it blonde yourself or go to the hairdressers again.