Back in march I decided to do peek-a-boo highlights in in my hair....I wanted a caramel honey tone. I only got it to lift to a brown colour but I kept it like that, didn't want to bleach my hair again.

Yesterday I decided to lighten it a bit more. So everything turned out ok but I noticed one strand of my peek a boo highlight...mid shift to ends, was a ashy grey colour! Might have been from previous colouring. I got a nice honey colour then mid way it looks ashy grey...

HOW DO I GET RID OF THAT?
DO I JUST BUY A BOX OF HONEY CARAMEL HAIR DYE AND COLOUR OVER IT?