I love the colour and intensity of the product. However, for the colour distribution to be even, you really need to spend time on tiny sections of hair, preferably dry. Putting the conditioner/treatment on wet hair only spreads the moisturising properties, not so much the colour. Having said that, if you already have existing colour in your hair, overtone products really give it a boost. The conditioner is quite light, so if you're expecting something more moisturising, use the treatment. The travel size one is great for use twice, for my hair length (slightly past the shoulders, and my coloured hair is only on the bottom half).
I let my friend use some of my products, and she also loved the colour outcome. I am ordering a new package just for her, and plan to get myself another one, once I decide on which colour(s) I want. I would definitely recommend overtone.