The glue is a product of the highest quality; its black color makes it blend perfectly with the color of the eyelashes, it is very flexible, does not leave lumps BETWEEN eyelashes, it is waterproof, does not drip, AND MOST IMPORTANT THING IS THAT AFTER THE OPENING, ITS EXPIRATION PERIOD IS 12 MONTHs and for all this time it is suitable for use, because it doesn???t dry out like other glues!