I bought this with the acetone remover. The packaging & the whole idea is a good one, it just needs more of the actual polish remover in the sponge, therefore I gave it 3 lippies instead of 4. For those who think the sponge has come loose when they try to twist their finger inside: it has NOT come lose. This is a small cylinder with a sponge lining the entire inside of it, all around. Then they put a plastic sleeve (with a large hole in it for your finger tip) over it that can rotate all the way around. So you're spinning your finger around the entire sponge on the inside of the whole cylinder, not just over one little spot of sponge. That being said, Cutex does not put NEARLY enough polish remover in it. They only put in enough to remove maybe the top layer or two of polish. Actually, I just poured more of my own polish remover inside of it to saturate the sponge a lot more. Voila! Hello, it works! Now I can take it with me for travel with nothing to dispose of or stink up the garbage can of my hotel room. This should last a good few manicures, until the sponge is full of all the removed nail polish &/or the sponge wears out. I would probably buy this again, unless another brand comes out with the same or similar plus ENOUGH polish remover already in it.