Anyone out there that can recommend a good conditioner that will prolong the colour of my hair. I have used KMS shampoo and conditioner as recommended by my salon for years but am wondering if there is anything better out there. My natural hair colour is black but I did have it darkened as the summer hols had lightened it and then I had blue streaks put in and I know they wont last as long as I would like them to, so any help appreciated.Thanks