Why do you need Roller Bottles? - It’s easier to direct where the oil goes without messy drips or spills. - Roller ball more smoothly, give better control of the amount of top oil, mo leakage absolutely! - No need to measure drops in your palm, release your hands from slimy liquid. - Easy to use, just roll on, then use fingertip to massage and you are done. Premium Features of Roll on Bottle :- - Made of corrosion-resistant glass, safe and reusable, simple to clean. - Roll on glass bottle protects against sunlight and UV rays, great for light-sensitive liquids. - Good storage choice for essential oils, perfume, or other liquids. - Easily fits in your purse, perfect size for travelling, carrying outside, home & office using. Direction to Use: Snap in the roller-ball by gently placing the roller-ball in the bottle and then firmly tighten the cap until the roller-ball snaps in. Use the roll-on bottle to apply the perfect amount of product each time. Remove the roller-ball by applying pressure with the cap.