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It is difficult to squeeze an ointment when the end is folded irregularly. Also one can hurt itself when trying to squeeze a sharp edge. If one tries to squeeze the ointment by force, the edge may explode. And finally, it is insanitary using a finger to apply the contents.
With this new type of ointment, you can squeeze the ointment without forcing with your fingers. Just simply stick the end of the ointment between the gap of the cap and roll it up. As you roll the cap, the tube will roll with the cap making the user easier to squeeze out the contents.
Cheonan-si, South Korea