I had red 7 months ago and I used Joico products. They work sooo well on red, imo. At least, the red in my hair lasted sooo long. I'd say 5 months, and of course it faded to some extent, but still very vibrant and not bleachy-pinkish-looking at all.

Does anyone know a good brand for a shampoo and conditioner for platinum coloured hair?
My friend told me something about getting a product with a purple toner in it or something about purple... ?