I have a little secret. Back in 8th grade, or maybe early high school, I started carrying a compact in my pencil case (read: makeup bag that also had writing instruments, but also a lot of lip gloss). That doesn't sound that earth shattering, but hear me out. I didn't just use it to touch up lip gloss or find out when I needed to blot. Oh, no. I also used it to scope out people behind me.
But in all seriousness, a good, heavy compact feels glamorous and sophisticated and totally beats opening your front-facing camera at an unflattering angle to check if you have food in your teeth. Here are some of my favorites on the market.