I ran through a whole Studio Tech compact foundation in record time. I'm about to use up my Matte cream, and have just hit pan on my Select Sheer pressed powder. Also I will run out of cleanser wipes soon.
Now the stuff with color, that will take longer!
About hitting pan on a pressed powder in 1.5 months--if I used the same one every day, all day, I know I would. But I have various ones (and various kinds) stashed in multiple places, purse, gym bag, makeup bag, home, so they don't get used up as fast.