I use No. 00. It seems to be my number one powder from start to finish. The particles are fine and delicate. When you apply it, it gives you a soft, gentle look, as if you're wrapped in a fluffy veil. It also makes pores that you don't want to stand out look neat. It comes off easily when you put on a mask, but it's not a problem if you touch it up. It's not great for carrying around, so I use a portable powder compact. It's helpful because it keeps your morning makeup in place even when you're out ^_^