Mascara
Mascara clumps quickly, so apply it correctly to get the most out of that tube of mascara and ensure that the liquid contents aren’t consumed in a few weeks. Stop pumping the wand in and out since this will cause it to dry up faster.
Because the container is not entirely sealed, more air enters the container each time, drying out the product. You’ll have more flakes and clumps on your eyelashes, necessitating a more frequent tube replacement.