I've been using these colours for about 3 months now and I love them. My hair has got a lot of grey/white in it, but has patches where the original dark roots show. Because of this I do put some peroxide in the dark roots. I like these colours because you can mix them together to give a custom colour which is all your own. I tend to leave the colour on for the maximum time to get a more vivid colour. The colour stays really vibrant for a couple of weeks, but even when it begins to fade I am left with a lovely muted colour which lasts for at least another 3 weeks, before I feel the need to reapply. My hair is fairly long, but fine in texture and I get about 3 applications from one tube. As with any colour treatments you must pay attention to conditioning. I get lots of compliments about my hair since using Osmo Color Psycho. I have not been offered any incentives or paid in any way for this review