Cost: $300 and up
Lasts: 2 to 4 months
Who should do it: "If you are looking to make hair more low maintenance, to cut down on your blow-dry time and also want your style to last longer in humidity, then you are a good candidate for a treatment," says Butterfly Studio Salon master stylist Nicole Descoteaux.

Why you should do it: Skip the stick-straight hair you'd get from a Brazilian Blowout and instead opt for a gentler option that leaves your hair frizz-free, but with bounce and body. "As women, we like to care for ourselves and our appearance, but we also want it to be practical and easy," says Descoteaux. "These treatments relieve the frustration from time-consuming styling that will not last in humid climates." It's also a great way to try out a new haircut you may normally shy away from. "Many people, because of their texture, cannot entertain a new on-trend shorter look. So by altering the texture first, it opens new opportunities for them," she explains.

One such treatment is the DeFrizz Quick Treatment, available at Julien Farel Salon in New York. "I created this anti-frizz treatment because so many of my clients wanted a healthier alternative to straightening," says Rudy Pena. It's a 90 minute in-salon treatment that Julien Farel describes as "superfood for your hair, because it features natural oils like grape seed, sweet almond and jojoba."

Descoteaux says formaldehyde-free options are the way to go, because they are healthy options that make your hair healthier. She likes Cezanne Perfect Finish Smoothing Treatment. It's keratin-based and also includes glycolic acid and sericin, so it smooths from the inside out -- as opposed to typical formaldehyde formulas, which just coat the hair to give it a smoothing effect.

Know before you go: Upkeep can get spendy, and it's important to do your research before you go. Look for salons that offer non-formaldehyde formulas, and make sure you get an experienced technician.

Cost: Typically, a small area like the upper lip will cost approximately $100-$200 per treatment, while larger areas like legs can range from $350-$900 per treatment.
Lasts: Long-term, nearly permanent. "Patients may have a new area of re-growth that occurs years after their hair removal sessions have ended," explains Julius Few, MD, director of the Few Institute for Aesthetic Plastic Surgery and Clinical Professor at the University of Chicago. "However, the average patient can expect 80 percent plus permanent hair loss."
Who should do it: "The ideal patient is fair-skinned with coarse, dark hair," says Kazin. People with white, light blonde or red hair on their bodies are not good candidates because the laser can't detect the pigment.

Why you should do it: Hate shaving and waxing? This one is for you (as long as you fit the above requirements). You can get the treatment done essentially anywhere you have hair -- legs, face, bikini area and underarms to name a few -- and the time ranges from a few minutes for a small area to 15 minutes for a larger area. There's slight pain -- think of the pain from being waxed or having your brows plucked, says Kazim -- but typically a topical numbing cream or a cooling mechanism is used to decrease discomfort. Know before you go: Because of your body's hair cycle, you can only reduce the amount of hair by around 20 percent each treatment, says Kazin. It can take 5-6 sessions to get rid of hair completely. The area will be pink and sore for about a day, and if you have a darker complexion you have to be incredibly careful about sun exposure, as it can turn the area brown, explains Kazin.

Cost: $700 a syringe; $3,000-4,000 for ultrasound therapy
Lasts: 6 months to one year
Who should do it: Someone who wants plastic surgery in theory, but doesn't want to go under the knife (or end up looking like a guest on "Botched.")

Why you should get it: Gabriel Chiu, DO, celebrity plastic surgeon in Beverly Hills, says one thing that's extremely recession-proof is Botox. But not just to erase frown lines. More and more people are using injectables for "temporary, long-lasting" nose jobs, cheek lifts, and jawline augmentations.

Recently, other types of therapies are being approved for use in ways that can mimic plastic surgery. Ultherapy, which uses ultrasound therapy, was recently FDA cleared for the neck and décolletage area. Ulysses H. Scarpidis, MD, Board Certified plastic surgeon and member of ASPS and ASAPs says, "Ultherapy is the only non-invasive technique that directly tightens the underlying muscles of the face, much like a facelift, albeit to a lesser degree." He adds that patients who need a small lift, or who don't have the luxury of a long recovery required with traditional surgery, will very much benefit from the results. Plus: no downtime. Manhattan-based Dr. Arash Akhavan adds that the collagen generated by the procedure is permanent -- but since your face, neck and décolleté will continue to age patients will likely need touch ups every one to five years, depending on their sun exposure and genetic background.

Know before you go: Dr. Antoinette Notaro adds, while fillers can results in an improvement that's satisfactory for someone who doesn't want to undergo surgery, they won't be as permanent or as drastic as a surgical intervention. The main difference (aside from the whole scalpel thing): "Surgery will pull the skin; filler gives it three dimensional fullness." The results are subtle, and you constantly need to get touchups to maintain the results.

Cost: $950-$3,000
Lasts: Forever.
Who should do it: If you have large, bulging varicose veins, says Bruce E. Katz, MD, Director of Juva Skin & Laser Center and clinical professor at Icahn School of Medicine at Mt. Sinai.

Why you should do it: One varicose vein stripping treatment can get rid of all your larger varicose veins -- for good. The procedure has minimal discomfort during and after the surgery. They use a local anesthetic around the area, and then make tiny incisions and actually remove the vein, explains Katz.

Know before you go: Though downtime is minimal, you will have to wear support stockings and refrain from exercise for about a week after the procedure.

Cost: $150 to $200, $50 for touchups
Lasts: 2 to 3 weeks
Who should do it: Women with sparse, straight lashes, those who can't stand mascara or anyone with a special event coming up, like a wedding.

Why you should get it: Sometimes, no matter how much mascara you wear or how many curling techniques you try, your stubborn lashes remain puny and pathetic. With lash extensions, you'll wake up in the morning with the most amazing curl, volume and length of your life -- and you can go sans mascara for weeks. Because the lashes also define your lash line, you can often skip wearing eye makeup altogether -- a major time-saver.

Big bonus: They look real. Since the extensions are applied to each individual lash, they look more natural than falsies, says Sabrina Sasson, owner of WinxBeautique, a lash spa in Los Angeles.

Know before you go: Since the extensions are glued onto your own lashes, when they fall out, some of your own lashes may fall out with them. So when you stop getting extensions you might end up with stumpier lashes than when you started.

Also, if you tend to sleep on one side more than the other, the side that rubs against your pillow will lose lashes more quickly. And while no mascara can compare to eyelash extensions, the required touchups do add up. Assume an annual cost of roughly $1,000.