The spiral design of the outer ring of the bottle mouth and the sealing cap make it tightly sealed, so it will not leak water when it is inverted, and it also plays a role in preserving freshness
The rounded bottle mouth makes it look beautiful and does not scratch your hands. And the thick glass design makes it stable, not easy to break.
Black colored glass with natural ultraviolet protection.
These are everything you could want in a dropper bottle for your essential oils and oil blending needs. The black powder coated glass block out all harmful UV rays. Also great for Travel. Take your oils, perfume and other small liquids with you in a refillable and reusable bottle. BPA Free droppers. Lead Free Glass. Medical grade, and food safe.