13 Beauty Products You Absolutely Must Buy in November

I have exceedingly high standards for eyeliner. It must be super black, smooth, smudgeproof, and waterproof. I never expect much from automatic pencils, but this new one from DHC ($11, available Nov. 2) blew me away. The formula glides on easily, even on the waterline, and is ridiculously durable. Though I expected to look like a raccoon after a thorough eye-rubbing in the shower, my liner appeared freshly applied after I stepped out. Even better, it doesn't leave weird residue on my contact lenses. I love this pencil so much, I'm planning on getting backups so I'm never without it.

— EO