i have never used that brand before but from my experience with cover girl trueblend, a little bit does go a long way. All i need is just a small drop. I have had it for over a year now and I haven't ran out of it yet. I also put it on maybe a couple of times a week.
I have it, and it has lasted me around 2-3, just because i use it lightly everyday, but because it doesn't have a pump, you could be wasting some so its best to use your fingers when applying it so you don't waste it OR put it on your face with your fingers and use a brush to spread it :)
Love this foundation , but honestly if your worried about it running out you most likely should get something cheaper, and not waste your money. It will last the same amount of time as drug store, or any other foundation you have used.
The authorities say not to keep any cosmetics longer than 6mos, but I have some Estée Lauder that has lasted much much longer. My experience has been Estée L cosmetics do cost more, but they are definitely worth it.