The title says it all. I want to know how many sponges (if you use them) you have spinning at any given time. Also, how often do you use it? For my part, I have 3 sponges in rotation, I apply makeup about 5 times a week and I need a sponge for each day of makeup. I live in a humid climate so it takes forever to dry and I wonder if I am making a mistake using them before they dry completely.