Your face, your feet, your lips -- they all need a scrub down. As colder weather approaches, it's important to "exfoliate away the dullness, so your skin will 'sparkle' through the holidays," says California dermatologist Dr. Annie Chiu, MD.

Here's why: "After months of sweat and a buildup of sunscreen and foundation, pores get clogged, which can lead to breakouts and dull, flaky skin," explains Dr. Roshini Raj, MD. The dry fall weather causes dead skin cells to build up on your body, as well.

To keep skin soft, use a scrub (or chemical exfoliator) to gently exfoliate your face and body twice a week. Do so "right after you get out of the shower, when your pores have been steamed and your face is clean," advises California dermatologist Dr. Douglas Wu, MD, PhD.

To keep your lips equally smooth, delicately scrub them with your toothbrush right after you brush your teeth. This will clear away flakiness and help prep lips for balm or color. As for dry, cracked heels, Washington DC dermatologist Dr. Tina West, MD, suggests applying a moisturizer with salicylic or lactic acid at night, and then putting on socks. "Use a pumice stone in the shower the next morning to gently encourage exfoliation," she says.

"As the seasons change, so should your skin-care regimen," says West. The most crucial change? Introducing extra moisture into your routine.

"Look for specific ingredients in your fall moisturizer," she says. These include hyaluronic acid, which attracts moisture, as well as squalene and ceramides, which strengthen skin's barrier against environmental damage and water evaporation.

We love summer just as much as any red-blooded human being. But the warm-weather seasons can be tough on skin -- and fall is the time to recover.

"Excessive sun exposure to the face, neck and your décolletage leads to uneven skin tone, sunspots and hyperpigmentation," says Raj. Repair your complexion by incorporating a vitamin C-packed brightening serum into your skin-care routine.

Sadly, acne does not go into hibernation for the winter. In fact, Chiu says the chilly temperatures and windy weather can irritate and inflame acne.

If you're one to reach for overdrying products to combat breakouts, such as over-the-counter benzoyl peroxide, you might want to reconsider. "Often excessive dryness can have the opposite effect on oil glands, as they get confused into increasing oil production to compensate," Chiu says.

This fall, switch to a non-drying, anti-inflammatory acne treatment gel containing dapsone. And even if you're not used to moisturizing before bed, opt for a grease-free night cream formulated for oily and combination skin.

"Don't skip the SPF just because it's less sunny out," Chiu cautions. "UV rays penetrate your skin despite the more gloomy weather." The SPF in your BB cream isn't enough, either. West says to use a sunscreen containing at least 6 percent zinc oxide, and apply it to the face, neck and chest every day before you get dressed.

"You'll be thankful down the road, since it's far [easier] to prevent sun damage than to reverse it," she says.