You know when you've overdone it. But your skin doesn't have to show it. If you can, remember to drink a big glass of water before you go to sleep. Better yet, have the foresight to leave a glass of water on my bedside. Everything after that you can save with skincare.
First, cleanse your skin and remove any traces of last night's makeup (or all of it...). Use a cleansing oil without fragrance that will soothe the skin, such as the Avène XeraCalm Lipid-Replenishing Cleansing Oil. Cleanse twice if need be. If any blemishes have come up, resist the urge to attack and let your skin relax.
If you have the day off work or even if you just have ten minutes after a shower, take the time to use a mask. I love the Origins Drink Up Intensive Mask to rehydrate your skin. Rinse off and follow with a hydrating water-based serum like the Vichy Aqualia Thermal Serum.
I love the MAC Strobe Cream that gives an all-over luminosity to the skin and looks best if worn under tinted moisturizer or foundation. It also contains antioxidants proven to have topical benefit for the skin.
A great tip I picked up from Bobbi Brown's Makeup Manual (read my review here) is to pat a balm (such as the Elizabeth Arden Eight Hour Cream) onto the cheeks for added glow. This balm also contains BHA and Vitamin E that work to smooth and protect the skin.