Amber 30 ml glass euro droppers with black tamper evident caps can make an excellent choice for packaging products like aromatherapy oils, pharmaceuticals, food products, and much more! Amber glass provides UV protection for light-sensitive components, assisting with keeping your products maintained when storing. The caps feature orifice reducers that allow for gradual product dispensing when installed into the essential oil bottles. Once the ribbed cap is screwed completely on the bottle, the orifice reducer will remain snug in the opening, ready for use. The tamper evident ring will detach from the rest of the cap when the essential oil bottle is first opened for added security.