I love Sephora. With my whole heart. One of my favorite things about shopping there are the free samples. The last time I was in, I got a makeup primer sample. I had heard that primer helps makeup go on smoother, and keeps it on longer.
I wore it a few days, and I couldn't really tell a difference. So I decided to put it on half my face. Don't worry, it was a day I didn't do much, so no one could make fun of me!
Eh. My foundation did go on smoother, but not so much that it was noticeable. And by the end of the day, I couldn't tell a difference at all. And I'm pretty sure it made me break out. Not recommended...