Don't forget: This week, we're bookmarking the beauty products you absolutely couldn't live without.
My pick is mascara, and since this is just a hypothetical question, I'd choose TheBalm's Two Timer as its dual brushes offer two rather distinct looks. What's yours?
Share your choices by bookmarking items from around the web and tagging them with the phrase Can't Live Without. I'll feature your favorites here tomorrow!
To learn about Beauty Mark It challenges and how to add your picks, check out this how-to. To see some of my favorite online beauty stores, read more.