- Designed with the 1940's Havana in mind, this unique diffuser employs natural ingredients to give it the distinct scent that makes it so popular. Made from a blend of Bergamot, Tobacco Leaf and Ylang Ylang, this reed diffuser will fill any room with its enticing aroma. Useful life of several months depending on room conditions. Key notes: Bergamot Leaf, Neroli, Crushed Thyme, Coriander.