Essential oils face two enemies: air and sunlight. With the 5 ml Glass Essential Oil Bottle with Euro Dropper Cap, you won’t ever have to worry about preserving the quality of your volatile oils. But let’s talk about its dropper first. Specially designed for essential oils, this vertical dropper lets out just the right amount of drops, preventing unnecessary splashes or uncontrolled flows. Once you place its airtight cap back, you can enjoy leakproof blends on the go and the fact that air will neither enter nor damage them. But how about sunlight protection? Well, this bottle’s glass isn’t your regular tinted glass. Designed in a lab, its ultraviolet glass blocks out visible wavelengths while permitting in beneficial rays. So not only does this bottle protect your oils against air and sunlight—it also harnesses the power of the sun to enhance their quality and preserve their freshness for longer.