The concealer textures, types, and shades out there are almost limitless. For shade options, Lorac Coverup Concealer or BareMinerals Correcting Concealer both offer more comprehensive ranges that also, thankfully, take undertones into account. If your concerns are more about portability than availability, pencils are the best thing to take with you for touch-ups, since they won't spill and there's no applicator, so you might consider something like Urban Decay Concealer Pencil. There are even anti-aging versions—TheBalm TimeBalm Concealer is beeswax-based and designed to protect skin and fill in lines.
But we want to hear from you! What's your favorite concealer brand and shade, and why does it work well for you?