THIEF Propolis Nasal spray Nasal hygiene and comfort Plant extract and thyme hydrolate Organic product 30ml Propolis Nasal Spray helps quickly relieve a stuffy nose, disinfecting and purifying the nasal passages. The benefits of propolis have been known since the dawn of time. Propolis comes from a resinous substance that bees collect from the buds of some trees (mainly birch, poplar, willow and various conifers).