I went to MAC to get a new blush brush yesterday, and the MA gave me the 168 brush. I really don't like it, and it's not what I had intended to get. My blush goes on so thick with that brush, even when I use just a tiny tiny bit. I've only used it a twice, thinking I could make it work, but it's just not. Would I be able to return the brush and exchange it for another one? I have my recipt and the original package. I got it at the counter at Nordstrom.