I first tried Kerastase Elixir Ultime a year ago, and I wouldn't turn back. Perfect for those who perhaps can't afford the luxury of having lots of hair products - it is a real all-rounder.
Elixir is really nourishing - if you have dry hair it will drink it up. It is great as a pre-blow-dry product (many people saying it cuts their blow-dry time in half!) Along with a treatment if you put it in and leave it in for about ten minutes before you shower.
I use mine mostly as a finishing product applying to my mid-lengths to ends to control frizz.
Priced at $48 - Elixir Ultime it is definitely worth it. As I said I have had mine almost a year, and I'm still not through it. A little goes a long way.