This glue is more like a "sticky" than a glue, I would say. Anyone who says they don't hold well is simply wrong and blaming the product when it's actually their own fault.
If you glue properly and the right way, the lashes will stay on for WEEKS. I had mine on for a MONTH once before I had to take them off (they were still holding strong) because the false lashes grew with the natural ones, creating a "gap" between the lashes and the eyelid.
The glue also lasts as long as possible!