Well, I have to say, I like the results. The gray is gone, color is subtle and multi tonal. I still have the lingering herbal mud smell, but overall I am pleased with my first experience with Henna. It is supposed to last for a few month and gently fade away. So we shall see. My hair grows really really fast so, it may last a bit shorter time frame before I have to remud.
All in all it was worth the effort.