RareEssence - Spa Reed Diffuser Passion - 90 ml. Rare Essence Passion Spa Reed Diffuser is made with Patchouli, Tangerine and Cinnamon Leaf. RareEssence Reed Diffusers are made from 100% pure essential oils. Artisan perfumers create their own sophisticated blend with essential oils that have been consciously sourced worldwide. Diffusing essential oils is a simple way to incoporate them into your environment with maximum benefit.