After having my roots done, I always have a Neal and Wolf 8.23 toner on. I love the colour and always get compliments. Unfortunately, it just doesn't last long and I'm back to my hair looking yellowy again. I could go and get it redone at the hairdressers but it's awkward to fit in and obvioulsy not cheap. So, I don't think that you can't buy N&W directly, but does anyone know what the equivalent would be in another brand? Or is it impossible to match across? Thanks.