The 20 ml Dropper Amber Glass Bottle has a special 18 mm neck that allows for controlled and careful dispensing of essential oils, serums and sensitive products. Product safety and protection from contamination are assured by making the bottle out of premium amber glass free from chemicals.We also have an in-house decoration unit that offers custom-made labels and other decorations such as coating, frosting, foiling, and printing. Because the bottle is leak-proof and eco-friendly, it is a trustworthy and fashionable packaging option.