The lazy days of summer can leave us with more than a few beauty woes come fall. According to dermatologist Heidi Waldorf, MD, "pigmentation and acne" are the two most prominent skin issues women face at the end of the summer. Here, she explains how you can erase these signs of summer and more with the help of over-the-counter products, prescription creams and in-office treatments. Follow this advice and you'll say hello to fall with gorgeous, glowing, spot-free skin.

Too much frolicking in the sun without SPF can lead to hyperpigmentation in the form of sunspots and freckles.

The Fix: "Although there are over-the-counter products that can be used, the most effective are prescription agents," Waldorf says. "I prescribe topical retinoids and hydroquinone," she adds.

If heading to your derm for a prescription isn't an option, try these beauty elixirs to fade age spots and freckles: Kate Somerville Mega C Dual Radiance Serum, $90, which contains skin brightening ingredients like vitamin C. You can also opt for a retinol, which increases cell turnover to speed up the lightening process, like Dr. Dennis Gross Skincare Ferulic Acid + Retinol Brightening Solution, $125.

"Sweating aggravates acne … the combination of creams and cosmetics plus sweats leads to pimples on the face and body," says Waldorf.

The Fix: She recommends treating mild to moderate acne with "topical antibiotics, retinoids and benzoyl peroxide."

For spot treatment, try ZapZyt Acne Treatment Gel, $4.99, which contains a hefty dose of benzoyl peroxide (10%) and can be used as often as three times each day, or as little as every other day if dryness occurs.

If benzoyl peroxide is too strong for your skin, try treating breakouts with Dermalogica Clear Start Breakout Clearing Cooling Masque, $24. Ingredients like salicylic acid help eliminate acne, while camphor and licorice extract cool and soothe irritation -- you can even treat body acne with it by letting it sit on the skin as directed before you hop in the shower to rinse it off.

Waldorf explains, "Pores don't expand, but they may look more prominent as cosmetics and creams slide in [your pores] with sweat and mix with dead skin cells and oil."

The Fix: She recommends using products containing retinoids, alpha-hydroxy acids and salicylic (like Murad AHA/BHA Exfoliating Cleanser, $35), which improve cell turnover to minimize the look of your pores.

"Physical exfoliants are also helpful," she says, recommending the use of a product like the Clarisonic Cleansing Device, $99, once or twice a week.

We're all familiar with the dry, cracked lips of winter. But too much sun and dehydration can leave lips rough, which is not ideal for wearing lipstick.

The Fix: To prevent dry, chapped lips, drink more water and apply SPF-infused lip balm like Supergoop! Acai Fusion Lip Balm Broad Spectrum SPF 30, $8.50.

At night, exfoliate your lips with a good scrub (try Fresh Sugar Lip Polish, $22.50) and follow up with a moisturizing balm that contains ingredients like hyaluronic acid or petrolatum (try Smith's Rosebud Salve, $6).