I've tried other adhensives & they don't stay as long as this one has it's the best ones out there I use the black glue because I always put black liquid eyeliner on top & it stay forever I've slept once with my eyelashes on and they never came off.
I decided to buy it after a friend had it but I bought the travel size just to try it out & I'm glad I did because it clumps too much & the wand brings out too much product