I use it up too quickly because I keep reapplying it.

I apply sunscreen in the morning, and I use a sun cushion (Age 20's product) for reapplying.

I've been applying it carefully lately, so I'm using it up really fast.

It feels like I just bought it, but I can already see the bottom.

It's a relief that refills are included; otherwise, I think I would have had to buy them again.

Still, it means they are working hard to manage it, haha.