After dying my hair, I have been using this for about two months without any shampoo and the go deep conditioner now, and I only need to dye my hair when I want to boost the brightness of my colour. Sure, my hair isn't as bright as it used to be and my ends don't really take much of the colour deposited by the conditioner, but my hair has been consistently purple; unlike most people whose hair colour fade very quickly. It isn't a super nourishing conditioner, but is alright for me since I have pretty strong hair and apply hair serums and all. It's also nice that this one doesn't colour everything it touches; I treat it like a normal conditioner, except I am more generous with the portions and leave it on for longer. Would recommend for anyone who doesn't want to dye their hair often but still generally preserve the colour, and is willing to pay for it as it is quite expensive for the amount of product that you get. Wish the bottles were larger and cheaper!