Hair Colour Fade Fast - Blonde to Brown

by Toni
(mooloolaba,qld,aus)

My daughter has gone from blonde to dark chocolate brown at the hairdresser but we keep having to go back every 3 weeks as colour washes out and hair colour is now light brown/auburn.

She would like to be a rich glossy dark brown what colour would you suggest to do and maintain this colour. Cant afford the money at hair dressers every three weeks? Help