I'm a natural blonde and I've been red, brown& purple but they were never very bright colours, then a couple of month ago I went back blonde and then I dyed it so I was a bleach blonde then I dyed it XXL purple and the colour that it came out was unbelievable I stood out so much its starting to fade and all my blondes coming through but what I want to know is if I put vingear on my hair will it take more of the purple out?

Don't use vinegar as this just may have an adverse effect on your present hair color. Use a special color stripper you can buy at a beauty supply house instead.

Who told you to use vinegar?