During the fall you might be pulling on hiking boots or biking shorts instead of a bikini, but you still need to protect your skin from the sun’s damaging rays when you’re outdoors. Don’t forget to put on your sunscreen (with UVA and UVB protection of at least SPF 15), and reapply regularly. Unsure which sunscreen will work best? The Skin Cancer Foundation awards their annual Seal of Recommendation to the safest and most effective products on the market: Go to skincancer.org to get a print-and-shop list

Sunscreen lotions and sprays alone let some UV light sneak through, and people skimp on application, just as they do with makeup. The best way to stay protected: Double up by layering makeup over a moisturizer containing and SPF of 15 or higher and UVA filters (Mexoryl, Helioplex, or avobenzone)

Even as the weather cools down, the scalp is easily sunburned, especially if your hair is light-colored or fine. Whatever your hair type, play it safe by treating your roots with a protective cream or by wearing a scarf or hat. Sunhats are made in cute winter styles, too, so don’t assume you need to wear a straw hat in October just to play it safe!

If you plan on spending hours driving around looking at fall foliage, don’t assume your car protects you from the sun. “Driving in a car doesn't completely protect you,” offers Dr. Amy Weschler, Marie Claire’s resident dermatologist. “While most windshields block sunburn-causing UVB rays, they don't block UVA rays, which cause aging and melanoma.” If you drive a lot during peak sun hours, Weschler suggests getting car windows tinted with the strongest available UVA filter.

Don’t forget to protect your eyes! “Over time, the sun’s rays can seriously damage the eyes and surrounding skin, leading to vision loss and conditions from cataracts and macular degeneration to eye and eyelid cancers,” warns the Skin Cancer Foundation. When you’re looking for the perfect pair, make sure the tag indicates that it blocks 99-100% of UV rays. Check out their website for other helpful tips about shopping for the perfect pair.

Skin cancer is the most common form of cancer--leading to 2 million new diagnoses per year—but the good news is, if diagnosed early, it can be treated. Take a little time to learn about how to do a self-examination for sun cancer at the Skin Cancer Foundation’s website.

Even if you have darker skin and don’t tan easily, you still need to wear sunscreen everyday. The melanin in darker skin protects it mostly from the burning UVB rays but offers less protection from the UA ones that penetrate deeper, causing not only photo-aging (wrinkles, sagging and brown spots) but melanoma- the deadliest form of skin cancer.

Melanoma is seven times more common between the ages of 10 and 20 than it is between 0 and 10 years. Make sure your kids wear sunscreen, even during the school week. Try socking an easy-to-use sunscreen stick away in their backpacks. Recess, after school sports, and field trips can add up to too much sun!

There are tons of great foundations with SPF 15, which, when doubled with your SPF moisturizers can give you extra protection.

We always think about leaving the house with an umbrella when it rains, but never a sun-protective parasol when it's bright and sunny. Check out Soleil Chic's parasols, which are capable of blocking out 97% of UVA and UVB rays.

Try circuit training to build muscle and boost metabolism; alternating strength moves and cardio training three times a week for 25 minutes will help you burn more calories throughout the day while also helping you lose inches off your waistline.

For big results, focus on one essential exercise: ball squats. “Hands down, they are the best,” says Kristin Reisinger, M.S., R.D., a New York City-based personal trainer and sports nutritionist. “This one move hits your glutes, quads, and hamstrings.”

Dumbbells are better for muscle toning than weight machines, because they require no adjusting, they allow the body to move naturally, and they can be used for dozens of different exercises (while machines have a limited repertoire).

Sit still for no more than three minutes between weight lifting sets. Waiting longer allows your muscles to cool down, weakening the benefits of the exercise.

Work all of your ab muscles by lying on your back (knees bent, feet flat on the floor) and having a partner throw a medicine ball to you in different directions—straight at you, to your left, to your right. Catch the ball by moving only your torso and arms. Toss the ball back to your partner. Do: Two sets of 20 repetitions, two to three times a week.

Rowing isn’t just about your arms; it’s a powerful toner for your lower body, especially the largest muscle of your butt. Do: 30 minutes once a week at an intensity level of 7 or 7.5 on a scale of 1 to 10 (10 being exhaustion). Increase by 10 to 15 minutes every three weeks. Bored? Download iRow ($7.99, iTrain.com) to your iPod, and it’s like having a coxswain guide to your workout.

When working on your abs or underbutt, the key to consistent progress is to do less every three weeks, not more. On the third week of your program, decrease the number of repetitions by a third. In the fourth and fifth weeks, increase the weight and take an extra 30 seconds of rest between sets (but keep the number of repetitions the same as week three). During the sixth week, drop the number of repetitions again (like you did in week three), and so on.

To condition your entire core, try the plank move four times a week. To do this move, start in a push-up position with forearms on the floor. Lift your arms and legs off the ground so that only your toes and the flats of your forearms remain on the floor. Keeping your back neutral and your belly button pulled in, hold this position for 20-60 seconds. Repeat for 3-5 sets.

To get a firm and toned butt, try the bridge move four times a week. To start this move, use a gym mat or a towel, lie down on your back with your knees bent and feet flat on the floor. Rest your arms on the ground parallel to your body, with your palms facing down. Keeping your upper back and your feet firmly on the mat, use your hands to support your body and raise your glutes up toward the ceiling as high as you can while contracting (squeezing) your glutes. Release the contraction and lower your glutes almost to the floor, being careful not to touch the mat. The, immediately raise your glutes again while contracting the muscles. Continue to contract and release for about 12-15 reps. On your last repetition, hold the contraction for about 10 seconds. Repeat 2-3 times daily.

Any exercise that involves pushing or pulling against a resistance—such as yoga, Pilates, push-ups, planks, and using resistance bands—is good for muscle toning and endurance.

Bronzer isn't just for summer time - it can add much-needed color to your complexion come colder weather. “When applied just below the cheekbones and around the outer perimeter of the face, it can even contour, sculpt and take pounds off a face,” says beauty expert Grace Gold. “Look for a bronzer with a ‘flat,’ neutral tone, and stay away from bronzers with orange or red hues, as it'll look like makeup sitting on your skin instead of a shadow.”

Glowing, radiant skin is achievable even as summer leaves us behind, says Philip L. Luque, Director of Artistry for Youngblood Mineral Cosmetics. “A lightweight oil-free tint will give you a sheer wash of color, with a dewy, shimmery glow that can be used on the face and the body,” suggests Luque.

It is important to continue to keep skin both hydrated and protected after the great sun exposure from the summer, and there are a slew of multi-purpose products that can help you do this. Find a lightweight formula that not only moisturizers and protects the skin with its SPF formulation, but reduces excess oil and provides a subtle, instant sheer color.

The go-to fall cosmetic for Hollywood makeup artist Brett Freedman? A little jar of Vaseline. “This cure-all is a must-have for any gal's summer-to-fall makeup bag,” offers Freedman. “When lips are very parched, apply a touch of aloe to lips at night followed by petroleum jelly on top. The aloe 'fills in the gaps' of the lips and the Vaseline holds it in. You can also lightly rub Vaseline on the eyelashes to darkens and condition - a great nighttime ritual. “Finally, you can try Vaseline on elbows and knees after a shower to fight ashy, dry skin.”

If you purchased summer foundation a few shades darker to match a summer tan, try stretching it into the winter months rather than tossing it out. “Focus the summer shade toward the outer areas of the face and under the cheekbones for a bit of warmth and contour,” suggests celebrity makeup artist Scott McMahan with Introartists. “The lighter shade will give a great natural highlight around your eyes and mouth bringing out your best assets.” Use a sponge and a stippling motion to blend everything. Begin to taper off the amount of the summer shade as we head deeper into fall and your natural summer color continues to fade.

“Transitioning your summer eyes from summer to fall can be done by adding just a couple of products,” Jason Garner, Makeup Artist and National Training Manager for DuWop. “The summer eye was characterized by warm coppers, ambers, and taupe with light mascara and liner. Using the warm ambers as a base, add a new deep plum or brown to the lower lid for definition. Finish the look with liquid black liner and intense mascara.”

“Start to fill in your eyebrows a bit more as we head into fall,” instructs Rochelle Rae, creator of Rochelle Rae Cosmetics. “A stronger, more defined brow than the natural look of summer will be a statement this season.”

Summer lips tend to look neutral and nude, so to transition into fall, get braver with color, suggests Gad Cohen, New York City makeup artist. “Go for the old fashioned stained look by dabbing the color onto the lip with your fingers to avoid heaviness.”

"Summer was all about more of the subtle, dewy and minimal makeup, so with fall rolling around the bend, get ready to rock that smoky eye!” says Michelle Villanueva, makeup artist and founder of Shadow Shields. “Play up your eyes with rich colors like browns, deep blues, and grays. Line both the top and bottom of the eyes to really make them bold and stand out. Finish them off with a couple coats of mascara.”

Fall is a perfect time to review your old makeup purchases by throwing out products that you may have kept too long. “The nose knows!” advises celeb makeup artist Sam Fine. “Smell lipsticks, mascaras and glosses to make sure summer heat hasn't encouraged their expiration, and begin shopping for new formulas, colors and shades for fall.”

Brighten up dullness with a facial highlighting wand, which contains a lightweight, almost shimmery version of concealer. “Applied in the right places, highlighter can take years off your face,” says New York City makeup artist Jessica Liebeskind.

For dry skin, exfoliating helps remove ashiness or buildup of dead skin cells that leave the complexion looking dull. For women with oily or acne-prone skin, exfoliation removes the excess dead skin that can clog pores and cause acne.

Sex can help ward off leg and thigh cellulite, the primary reason we drag ourselves to the gym in the first place. It won’t clear it up completely, but it will zap some of those fatty cells!

Prep summery skin for cooler temps with a collagen mask. “Natural beauty and flawless skin comes from anti-aging treatments that are full of nutrients, proteins and active ingredients,” explains Jamie Thomas, Trend Director for Stylelight.com. “Hydration helps to increase skin's elasticity and creates a fresh look.”

Even the most luxurious lip gloss can't salvage chapped lips. Time to think beyond the balm and treat lips to the same TLC the rest of your face enjoys. Lorencin Northrup is a big advocate of exfoliating (a mixture of fine salt and olive oil is an effective home remedy) and reapplying moisturizer regularly. "Here's a secret: Use your richest eye cream on your lips!" Fortunately, it usually comes in small jars, so it's easy to stash in your bag. Note: Be sure it's a "hydrating" formula, not "firming" — which is code for drying. For painfully chapped lips, Dr. Linda Stein Gold of the Henry Ford Hospital in Detroit recommends a dab of hydrocortisone cream once a day for no more than a week.

Derms say hot water followed by cool, dry air is a key culprit when it comes to rough, itchy arms, legs, and backside in cooler months. Keep showers short and lukewarm, advises NYC dermatologist Dr. Neil Sadick. To lock in moisture post-shower, pat — don't rub — yourself dry, and immediately coat skin in a thick alpha-hydroxy body lotion. "Alpha-hydroxy acids will peel away dead, dry skin, so it gets rid of the flaking while offering deep hydration," Sadick explains.

To banish unsightly back and chest acne, clean the afflicted areas daily using a body wash containing either salicylic acid, which sloughs off dead skin cells to unplug pores, or benzoyl peroxide, which kills the bacteria that cause inflammation (try Neutrogena Body Clear Body Wash or Oxy Body Wash, each $6, drugstore.com). You can also take a 2,000 mg to 4,000 mg daily supplement of DHA and EPA omega-3 fatty acids, which may keep acne at bay thanks to their anti-inflammatory abilities, according to a recent study.

Reduce cellulite and dimples on the cheap with a daily dose of firming cream, which contains ingredients like caffeine and seaweed that are said to tighten and moisturize the skin.

Keep your summer complexion dewy long into the fall with an avocado mask. Mash one ripe avocado and mix it with a little bit of lemon juice. Apply this mask to your face and neck for an over-the-counter toner and firmer.

You can always tell when someone hasn't switched from her summer-skin regimen, says Dr. Macrene Alexiades Armenakas, assistant clinical professor of dermatology at Yale. "I see a lot of people getting red, and they're completely at a loss for what happened," she says. Foaming face washes, alcohol-based toners, and astringents are all designed to strip oil — problem is, as the weather gets cooler, there's less oil to strip. Alexiades Armenakas recommends going easy with these products in the cold season — along with retinoids and vitamin C derivatives, which can trigger irritation. "Save these anti-agers for every other night," says Morgan Walsh, an aesthetician at the Aspen Club & Spa in Aspen, CO.