I'm a natural blonde and have always had light blonde highlights for my whole life then something came over me and I wanted a change and I decided to get it dyed a dark chocolate brown professionally at a salon about 3 weeks ago and it has reddish highlights now because I got it dyed over the blonde highlights I used to have. Now I regret it so much and I feel that its too dark and it doesn't suit my skin tone. People say it looks all right but I miss my blonde now and I want to work towards getting it blonde again.. What's the best way to get that natural blonde hair again? I know it's a difficult process but I want to know if anyone has any experience in doing this and how did they do it to get a good outcome without any brassy/orange, yellow or any other unwanted colors? Help please

I left the full version of this here, but basically what you'll need to do is bleach your hair, then use a toner to remove any brassy/gold elements. Because blonde is such a hard color to do, I definitely recommend having your regular colorist do this.

If salon based they will do this for you... but yes use dyes such as jerome russel dark hair to blonde and then use toners also ash blonde to remove brassy tones. You can buy from boots, superdrug, tescos a treatment called touch of silver which removes yellow tones. But yes it may take a few dyes to get it back tor required colour.