I use Lasting Care (I think) 24 shampoos.
I have been using it for about 20 years I now need to use it more often. I have dark hair and I am trying to make it lighter slowly. I wash my hair twice a week and use the coloured conditioners from Superdrug when it starts to fade.
Because of the conditioners I am now dying it about every six weeks
I color my hair about half a year, and I think the best way to avoid the color fading is to prevent the ultraviolet radiation, so that you can wear a hat to make this.
I've got a lot grey now but it's a horrible steel colour so I get it frosted in cinnamon and ash every three months with foils .It blends all the grey in.I go to a local independent hairdresser and she charges thirty quid .Weighing that up against buying home colourants and root touch up stuff and faffing around with it all dripping down me neck and face it's not that dear.