Brown essential oil glass dropper bottles are small, cylindrical containers that are made of brown glass and are used to hold and store essential oils. Essential oils are concentrated plant extracts that are used for a variety of purposes, including aromatherapy, natural remedies, and skin care. The dropper bottle has a narrow neck and a rubber dropper top that allows the user to easily dispense small amounts of the oil by squeezing the dropper. Brown glass dropper bottles are preferred by some people because the brown color helps to protect the essential oils from light exposure, which can cause them to degrade over time. Brown glass is also more resistant to breaking than clear glass, making it a more durable choice for storing essential oils. However, it may be more difficult to see the color and clarity of the essential oil inside the bottle.