The one thing I seem to be able to successfully keep in my collection one at a time is face powder. I'm not sure if it's because it's less fun to buy than other base or color products or if it's because I go through it faster than any other product in my collection.
It's the one thing I always manage to show the most loyalty to as well. I find myself finding a formula I love, going back to it two or three times and then move on to something new.
There were quite a few new to me formulas on my international "to buy" list so for the first time in months I have more than one compact to work my way through.