If you find yourself with an empty 15 ml bottle, these fine mist spray assemblies are the perfect match for you. Change that bottle into a compact glass spray bottle air freshener.
Be advised, the mist is very fine so you will not want to use any thick liquids with this sprayer as it will have a high potential to clog the spraying mechanism (and will be almost guaranteed when used with vegetable oil).
These sprayers are perfect to repurpose old essential oil bottles into a sprayer.
Best way to clean these is to submerge in warm soapy water and run several iterations of sprays through the tube and sprayer.
(NOTE: The picture of the bottle in the picture is for illustrative purposes only.)