Reed diffusers have been used for centuries to make rooms smell nice. They were first documented in Ancient Egypt, where inscriptions regarding perfumes mention reeds being put into oil lamps with essential oils inside them, but the ancient ancient Greeks, Romans and Chinese used them too. During the medieval was the norm to “sterilise” the air around you and ward off infection. The 11th century Crusades ignited a fragrance renaissance in Medieval Europe when knights returned with bottles of rose water and new techniques to make perfume stolen from the invaded territories . The first modern reed diffusers were created by French company Rougier Frères in 1918 and used lavender oil as their fragrance They are very simple to use; reeds are inserted into a glass bottle or glass jar of scented diffuser oil, the reeds soak up the scent and emit a pleasant aroma around your home. Mine also come with gold, silver and rose gold flake in them. You can choose your scent and flakes. These will last you up to six months and are refillable.