Prlease help. I have had my dark hair lightened for years, as blonde suits me better. However I wend to hairdresses last week and decided to have my roots lightened with bleach blonde hightlites instead tint. However, the salon put a lot of brown lowlites in too, which look alwful, how to I get red of this brown colour, without damaging hair.

You should always wait a minimum of 4 weeks before dying your hair again. Doing it sooner than this can ruin your hair and even causing it to fall out.
I suggest you go to a professional for advice. Remember the hairdresser is there to do what YOU asked not what they feel like. YOU are paying them. If you don't like what they're doing stop them. Be sure you tell them exactly what you want

If you really don't want to go to a professional then wait 4 weeks from when you had it dyed last and then useLoreal Nice n Easy Dye, It's the most natural looking dyes and it's the kindest to hair.

(This is all from personal experience!)

That's what happens when your going blonde from dark hair. Your roots will always go the right color or at least the lightest because that hairs fresh & never been processed. Whenever you bleach you need to do the ends first & the roots a little later to get the processing the same. Since it did turn orange, as I'm in the same state right now ha you will have to bleach it another time or 2 with the best bleach sallys tells you about & do a 20 VOLUME developer, 30 & definitely 40 will ruin your hair easily. Don't bleach more than once every 1 1/2 - 2 weeks & use a deep condition Every time. Don't use ash blonde once your at the orange stage it will turn green or gray, definitely not blonde, which will leave more bleachin to do so dye it wit bleach again & wait a week or 2 if its not what you want, when you bleach it put it up in a plastic hair cap to seal in heat that processes it better. Also, when mixing the bleach add enough developer to make it as creamy as hair dye not foamy like the packages advises, it needs to be creamy, & u always need to keep it nice & soaked if any part dries out you need to soak it wit more bleach, if it dries out its not working. NEVER Leave bleach in for more than an hour or until you get the color you want whichever comes first! At some point you will need a toner unless you get it really close to the blonde you want then buy the blonde dye wit the shade you want it. HOPE THIS HELPS, Im in the orange stage right now 1 or 2 more bleachings to go