Arsenic Osman is part of the Black Label Collection. From the LM Parfums website:
Arsenic Osman is a wonderful tribute to the mysterious and powerful osmanthus flower. The mesmerizing perfume conjures that very instance of pleasure experienced when we fill the unbearable void of an addiction. Darkness becomes light; silence bursts and a feeling of euphoria captures your mind and body like an ultimate shot of happiness. This gently addictive poison will plunge you into depths of radiant fragrances adorned with delicate scents of vanilla and plum.
Arsenic Osman features top notes of plum and Sri-Lankan cinnamon; middle notes of Grasse violet, Indian jasmine and Chinese osmanthus; and base notes of Indonesian patchouli, white leather and Madagascar vanilla. It is an extrait de parfum.