Review (4/5): easy to use, great space saver!
I got a few of these bottles to transfer some makeup foundation into to save space. They were easy to fill and use. I notice that the little round plate moves up and you pump, pushing the product out.
I've read that when it's time to refill them after use, you must push the little round plate down to the bottom of the bottle.
So far I am very happy with these bottles.