I stupidly box dyed my hair for the first time, I'm naturally darkish brown and thin and frizzy with increasing grey round my temples - I don't know why but I just snapped at seeing so much grey and got box dye from the supermarket. I used Garnier Olia 5.3 ... It's a disaster, It's colored all of the grey as far as I can see but it's distinctively auburn/ginger instead of chocolate and defiantly looks box dyed... a part from an expensive trip to the hairdresser is there anything I can do ?