At Cochine Saigon, a beautiful fragrance brand inspired by Vietnam, one third of the business is made up of reed diffusers. The most popular is White Jasmine & Gardenia, a heady floral, though my favourite is the spicier Vanille & Tabac Noir (vanilla bean with hints of patchouli, as well as tobacco flower, extracts of cardamon, nutmeg and basil). Out just in time for Christmas is Juniper & Ginger (GBP49.99, pictured) which has a wonderful eucalyptus undertone as well as hints of clove, bergamot and patchouli.