I found this while organizing for my move. It hasn't been taken out of the box. It's new, unused, and unopened. I think I bought it last year. It's been stored in a dark room. Thank you. Kerastase HU Huile Sublime Elixir Ultime Imperial N (leave-in hair treatment) 100ml [How to use] After shampooing and conditioning, apply an appropriate amount to towel-dried hair and work it in well. Do not rinse.