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Based on the use of intense focused light, the term laser encompasses many different kinds of
treatments. Lasers were developed in the 1960s and have been used for cosmetic purposes for the
last 20 years and every year, new laser therapies are developed or refined. All lasers use a
high-energy beam of light to target lines, wrinkles, scars, dark spots, visible veins, unwanted
hair, and other skin irregularities including facial hair removal. There are two general classes
of lasers: so called “ablative” and “non ablative.” Ablative laser therapy, also known as laser
resurfacing is the gold standard for facial rejuvenation. Many systems allow for light, moderate
or deep levels of resurfacing. Non-ablative therapy is relatively new and is designed to stimulate
collagen synthesis in the skin without damaging the outer layers. In general, ablative laser
therapy is more effective but requires a more involved procedure, more recovery time, and more risks.
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Ablative laser therapy effectively treats the changes associated with aging including wrinkles,
discoloration, and loss of elasticity. Non ablative therapy is used to improve the texture of the
skin, treat visible blood vessels, and remove hair.
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Either a local or general anesthesia is required for laser resurfacing. Once you are numb,
the laser session generally lasts 30 to 90 minutes. You will be given protective laser eyewear.
The practitioner applies the laser instrument to the area of treatment and removes thin layers of
skin. Non-ablative therapy has been compared to the snap of a rubber band and depending on the
area being treated, topical anesthesia is sometimes used.
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How the skin feels after the procedure will differ depending on which type of laser is used.
You can discuss the details of this with your physician.
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Ablative laser therapy such as laser resurfacing usually requires one treatment. Non ablative
therapy differs depending on the particular treatment but multiple treatments are usually
required. You and your physician will decide on the best plan to meet your individual needs.
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You can usually return to regular activities in 4-7 days after ablative laser therapy. Redness
usually disappears over the course of a few weeks. Non-ablative therapy usually requires no
recovery time.
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With good sun protection, ablative laser therapy can last for years while studies examining the
effects of non ablative therapy are still in progress.
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In general, ablative laser therapy will cause post operative pain, redness, and swelling lasting
at least one week. Complications include extended pain, redness, swelling, infections, scarring,
and discoloration. In general, non-ablative laser therapy has fewer side effects which include
mild and limited redness, discoloration, and swelling. The risks and benefits of laser therapy
need to be discussed in detail with your physician.
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Laser resurfacing is expensive and ranges from hundreds of dollars for non-ablative techniques and
several thousand dollars for ablative techniques involving the whole face.
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