L'oreal Paris Pure-Clay Mask Purify & Mattify, $13

For those days when your skin feels sweaty, grimy and just plain gross, you want a mask that'll deep-clean those pores, ASAP. This treatment mask draws out dirt, excess oil and makeup, using a slew of feel-good ingredients. While eucalyptus calms the skin and reduces shine, kaolinite gets rid of built-up impurities and montmorillonite (another type of clay) rebalances skin. Of course, you can't forget ghassoul, a volcanic clay from Morocco.

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