For the first hour, it has a bitter, medicinal scent reminiscent of a hospital. Then it softens a bit. That bitterness and medicinal quality didn't change much on my skin; the fragrance stayed linear and showed no development. Guilty Absolu de Parfum also started with that same bitter and medicinal opening, but it underwent a major transformation and really impressed me. That's why the Elixir was a disappointment for me. But the scent still has a captivating and intriguing side to it.
Longevity and projection 10/10. It was still very strong on my arm even after 12 hours. After washing, its projection decreased, but I could still catch whiffs of it. At the 24-hour mark, it was still lingering when I brought my arm close.