MAC's cleansing wipes.
They're perfect for traveling. I took them to Mexico this past summer and used them as my nightly make-off regimen as well as my morning cleansing routine. They have a toner included, so they truly leave my skin cleansed, refreshed, and with improved texture. My skin tends to freak out with various products, so to have found one multi-purpose product that ALSO improves my skin quality was like money in the bank. I have even read that Kim Kardashian uses and swears by them as well. If that doesn't sway you, I don't know what will. ;)