My natural hair colour is a medium- dark ashy brown. Due to the increasing number of greys coming through I’ve been having it coloured for the past 2 years to be as close to my natural shade as possible. This has been giving good results but it’s now more than three months since my last colour. I can cope with the greys coming through ( in fact I’m considering stopping the colouring and letting nature take its course and that’s another issue ) but due to the fading of the dye, and probably the sun, the coloured part of my hair is developing very red tones which are very obvious compared to the roots. I’ve seen ‘blue’ toning shampoos aimed at brunettes to counteract this but they all seem to be the high end pricy shampoos. Has any one used them and do they work to take the colour more ashy again and are they worth the money? And does anyone have any recommendations as to which ones to try?