Duo Adhesive ($6-8 depending on size). I’ve used both the clear and dark tone versions. Both versions work amazingly well. The only difference between the white/clear and the dark tone is that the clear is a white colored glue that dries almost clear. The dark tone is a greyish colored glue that dries almost black. I prefer the dark done if I’m using black eyeliner because it blends with the eyeliner. If I’m using colored eyeliner, I use the white/clear version.
The glue lasts all day and won’t come off until you remove it. The glue becomes tacky very quickly (less than a minute) so you don’t have to wait around waiting for it to dry. My only complaint is that I wish the nozzle to the tube was smaller because if you squeeze too quickly, a giant glob of glue will come oozing out. Duo Adhesive is my choice of eyelash glue.
You can buy Duo Adhesive at drugstores, MAC, and online.