thank you teenagexvanity! (and thanks again miniris)
You're more than welcome
Here is (finally!) an article about ombré hair from this month french Glamour. Hopefully, in a few weeks, our french hairdressers won't look at us as if we were extraterrestrials anymore!
Translation :
Impulsed by the fashion world (through Erin Wasson), the tie & dye look could be this summer's color.
What does it looks like?
Light ends, with dark roots. The more contrast, the more it rocks. Even if this trend looks "home-made", it is quite difficult to get. The best would be to ask a colorist. The difficulty would be to avoid the vanilla/chocolate effect, giving a patina to the hair, so the two colors get blended.
Is that for me?
Yes, if your natural hair is not too light. On thin hair, it looks good too because the ends looks like feathers. On thick or very straight hair, it's more complicated, because the difference between the light and the dark part is much more visible.
How to maintain it?
By spraying a lightener product on the ends. Light blonds can darken their roots as well. (Lightener spray Go Blonder Sheer Blonde, John Frieda)
What hair cut for this new blond?
Very short hair (the blond is applied on the very ends only) - bobbed hairstyle - Soulder length with a light layered cut
Hope the English is comprehensible!
You should come to your hairdresser with the article Andrea.RL, that's exactly what I'm going to do next time. Even if it does not really explain anything, it might make more sense than our explanations.
thank you for telling (me) us! 
It'd look too awkward. One would see all the layers and coloring. If it's curled or wavy, the color is sort of hiding.
