Too 'blonde' highlights?

[selina150]

everytime i get highlights done they turn out quite white, rather than blonde. i told my haidresser this and she said she changed the colour but they turned out the same!
i have naturally mousey hair that i've been having highlighted for 3 years, though about 18 months ago it go too blonde so i went light brown again and just had a few highlights in a t-section. now when i go i have a blonde and a brown put in (to break up the blonde) and the brown has gone very dark also, evn thoough the hairdresser swears she hasnt changed the colour!

 

[crazybek]

Hi
Sometimes when using high lift colour to achieve a blonde,if left on too long,it will lift past the creamy stage.Once thats happened the only way to warm the colour up is to apply a toner to the blondes.Also the dark colour may be looking darker because the blonde is so light.Sometimes the contrast between the 2 colours looks more than it is,emphasising the dark and on the other side of the spectrum,the dark makes the blonde look even lighter.
Definatly applying a toner or something really light,like a base 9 with a little warmth should tone it down and blend it all in abit more.
hth
x