I have now had 5 to 6 of the mac waterproof mascaras (black & teal packaging) all that i have had the wand starts to crack where the threads end. Since this is very expensive mascara i have tried everythjng to save the product from drying out. I have used tape and super glue to try and keep air out of the product. I am very careful to screw and unscrew the wand toward the bottom and not over tighten, but nothing i do seems to help. The wands continuously crack. It is a shame. I love the mascara but due to the packaging cracking i will be forced to find another brand.