The Weatherproof Gloss Inkjet is one of our most durable inkjet label materials and is designed to withstand direct contact with moisture. Certain types of chemicals and oils may affect the print quality to some degree, but it should work well for your application. We're happy to provide free samples of the material if you'd like to test this with your tincture bottles. You can request samples at the link below: https://www.onlinelabels.com/samples If you find that oils do affect the print quality, you could potentially try using a clear overcoat spray for extra durability. You can view a tutorial on applying a clear overcoat spray at the link below: https://www.onlinelabels.com/articles/krylon-weatherproof-waterproof-label-overcoat-spray.htm