Chill out your complexion quite literally this summer.

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From watermelon slices and fresh blueberries to pitchers of sweet tea and homemade chicken salad, Southerners tend to pack their refrigerators to the brim during the summer months. But before you fill every square inch of the fridge with Piggly Wiggly or Publix purchases, consider leaving a little extra space for your favorite skincare products. And no, we're not talking about the DIY kind. "Although it's not necessary for the majority of products, it can be beneficial to keep certain skin care products refrigerated," says dermatologist Maura Caufield, M.D.. "Doing so can help extend the shelf life of your products by decreasing the breakdown of preservatives and active ingredients." So what exactly should you stash next to your jar of Hellmann's? Here's a handy guide:

Serums

No matter what type of serum you religiously apply, it's not a bad idea to keep it chilled. Storing the formula at a cooler temperature makes for an easier, smoother application. It's especially important if there's vitamin C in it: "Certain products, such as vitamin C serums, are very sensitive to light and air, and if exposed, become oxidized and lose efficacy," explains Dr. Caufield. After all, if you're going to splurge on a pricey formula, you want to ensure you get all the bang for your buck.

Face Mists

"Applying products when they are cool helps soothe the skin," says Dr. Caufield, so go ahead and place facial mists on your fridge shelf. These complexion refreshers are the easiest way to rejuvenate and calm down skin after a sweltering Southern day or intense workout.

Eye Cream

Mama always told us cold spoons and cucumbers are the easiest ways to depuff our eyes, so it comes as no surprise that eye creams should be applied cold. "When applied chilled, eye creams decrease puffiness and undereye bags," further explains Dr. Caufield. "By constricting blood vessels, the application of cooled products can also help diminish redness." Faking a good night's sleep has never been easier.

Sunscreens

We've told y'all that keeping a bottle of SPF in your cooler is the secret to staying protected and refreshed during beach vacations, so why not stash it in your refrigerator too? That way it'll be chilled and ready to go the next time you're heading out into the heat.

Face Masks

Not only will keeping your favorite face mask in the fridge up its relaxation benefits, but it'll also depuff. It's especially important to keep it cold if it's stored in a jar or pot. According to Dr. Caufield, refrigerating formulas that you use your hands to apply cuts back on any bacterial growth.

WATCH: The 15 Best Antiaging Creams and Serums for Aging Gracefully

Natural Skincare Products

Some natural brands don't have preservatives in them, so if you're using organic skincare, keeping it cold is the simplest way to extend its shelf life. There's one caveat though: If it's an oil, like coconut or olive oil, keep it at room temperature. "They can solidify at colder temperatures," warns Dr. Caufield.

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