I use Herbal Essences Color Me Happy Shampoo, and Herbal Essences Color Me Happy Conditioner.
It's very good, it makes my hair all bright and 'radiant' and keeps the colour in
When my hair isn't dyed, I use Herbal Essences Drama Clean Shampoo, because it makes your scalp tingle when you use it and also makes your hair light and fluffy.