Home dye on my already highlighted hair

So do you want to go from a full-head of highlights to an all over colour, or do you want to continue with the highlights?

Sorry i should have explained, i want to go from half head highlights to all over colour for ease.I'm due my roots doing on Thursday and can't bear the thought of parting with another £70 if I can avoid it but don't want my hair to go a funny colour!

Helen

What you want is not going to be easy. You can start doing solid roots, but you won't be able to put a colour or bleach over the highlighted areas. To get the natural parts light enough would mean over-processing the already lightened areas, risking damage and breakage.
Explain what you are planning to your stylist and ask them to put as many highlights as possible through the already highlighted area, so it is as blonde as possible. You can then lighten the under parts yourself and start doing solid roots.
She may be able to recommend products for you, (some salons will sell you a colour rather than have you use box dyes) if your hair is naturally blonde you can possibly use a high lift colour, if not you will need a really good professional quality bleach. Your stylist will know how easily your hair lifts so is the person to ask.

I'm less bothered about how blonde it is and more bothered that it's all the same (or similar) colour so is easier and cheaper to manage going forward. The last time I had it coloured in any way was 10 weeks ago and the roots are showing through. I guess what I'm really asking is what would happen if I put Nice & Easy natural light summer blonde (SB1) all over my head, would it be a catastrophe?!

Thanks!!

Yes lol a total catastrophe!
It probably wouldn't lighten your natural hair enough, so would be brassy/orange toned (although I am guessing here as I have never seen your hair) and the already highlighted areas would be damaged.
So you will probably get orangey hair with fried highlights, not a great look.
If you can post a pic of your current hair it will really help

Lol oh dear, that doesn't sound good, i've attached a picture that was taken at the weekend. I'm due to get my hair done on Thursday and I can't afford to get it coloured but really need my roots touching up! So any advice would be so helpful!

What is your natural colour?

The attached picture is pretty much my natural colour!