Note:
(1) As the outer shell of the bottle cap is made of aluminum with plated finished, there will be a little dents or scratches, which can't be 100% avoided. Please make sure you don't mind it before purchasing.
(2)Before using, please check if the roller ball is stuck.
(3)You can try to press the ball to the hard surface, then the ball / oil outlet will be looser, can be used easily.
(4)You can also try to refill the bottle with oils, then screw the cap tightenly. The cap squeezes the ball, oil outlet might be looser in the second day.