AirSculpt is surgery. CoolSculpting is not. That is the difference that decides almost everything else on this page. AirSculpt is a form of liposuction. A thin tube is passed through small openings in the skin, and fat is suctioned out of the body during the appointment. CoolSculpting is a cooling cup held against the outside of the skin. Nothing is cut, and nothing leaves the body on the day.
The FDA record says the same thing in its own words. The AirSculpt Body Contouring System was cleared on 27 November 2024 under K241835 as a suction lipoplasty system. It is cleared for "the removal of tissue or fluid from the body during general liposuction procedures for the purpose of aesthetic body contouring". Its own FDA summary calls it "a surgical device". A 510(k) clearance is a finding that a device is much the same as something already on the market. It is not a finding that it works. CoolSculpting sits in a different FDA category altogether. That category is contact cooling for aesthetic use, and it was created for CoolSculpting by a De Novo authorisation in 2010.
So the useful question is not which machine is better. It is whether you want a procedure or a treatment. One is a single appointment: local anaesthetic, incisions, fat measured in a canister at the end, and a recovery counted in days. The other is several cycles of an office treatment with no anaesthetic and no recovery. It thins the fat layer over about three months, and the change may be small enough that you are not sure you can see it.
Almost nothing has been published on AirSculpt as a branded procedure. A search of the medical literature for AirSculpt returns no study of the procedure itself. Liposuction as a general technique has a large literature. This branded version of it does not. The FDA file is thin in the same way. Clearance rested on bench testing, and the 510(k) summary states that "Clinical data was not required to support the substantial equivalence of the AirSculpt Body Contouring System to the predicate device."
One point of housekeeping about the name. The 510(k) is held by Cellmyx, of Carlsbad, California. The clinic brand that markets AirSculpt trades under a different name. The FDA record does not set out the relationship between the two. If the corporate structure matters to you, ask.
Fat is loosened and sucked out through small access points. It leaves the body during the appointment. FDA classes the hardware as a suction lipoplasty system, product code QPB. The device it was cleared against is another liposuction device.
A fold of tissue is drawn into a cup and held at a set low temperature for a set time. No incision, no anaesthetic, and you leave under your own steam.
The volume removed is known at the end of the procedure.
Fat cells are more easily harmed by cold than skin, nerve, vessel and muscle. Controlled cooling inflames the fat lobules and the cells die days later. The debris is cleared over the following months. Nothing is removed on the day.
K241835, cleared 27 November 2024. No body area is named and no body mass index limit appears. The clearance rested on bench testing, and the summary states clinical data was not required.
The submental and submandibular areas, meaning under the chin and under the jawline, are cleared separately, up to a body mass index of 46.2. CoolSculpting Elite was cleared as K212707 on 5 November 2021. The chain begins with the De Novo DEN090002, decided 24 August 2010, whose first cleared area was the flanks alone.
These are the risks of an operation rather than a device session. They include bleeding, infection at the access points, and a contour that ends up uneven and needs redoing. How often that happens with this branded technique has not been published.
The labelled risks are of a different kind: discomfort, pain, tenderness, thermal injury, a whole-body response to cold, inflammation and use error. That is the list FDA wrote into the special controls for this device category.
Blinded photo picking is the main endpoint in most CoolSculpting clearances. It is a spot-the-difference test, not a measurement of fat. FDA's own pooled review of 4,792 cryolipolysis treatments put the mean ultrasound fat-layer drop at 20.6%, or 3.9 mm. Study means ran from 10.3% to 25.5%. An independent randomised split-body trial measured about 14% at 12 weeks.
The recovery timelines circulating for AirSculpt come from the brand, not from a published study. Treat what you are quoted as marketing until a surgeon has examined you and said otherwise.
A review of 554 cryolipolysis procedures called delayed pain arriving a few days after treatment not uncommon. It lasted 3 to 11 days and settled with no lasting effect. Numbness is the common effect that lasts longest. In the FDA-reviewed upper-arm study, 4 of 30 patients still had it beyond 12 weeks.
The largest real-world review covered 3,262 patients and 18,203 cycles at one multi-site practice. The median was 4 cycles and 1 session per patient. The mean was 5.6 cycles, and the range ran from 1 to 177.
For scale, the American Society of Plastic Surgeons gives a 2024 projected surgeon fee range for liposuction of $4,300 to $7,500. That is a surgeon fee only. It leaves out the facility, the anaesthetic and the supplies.
RealSelf figures are what people who chose to write a review say they paid. They are not a market survey. On the same platform the satisfaction ratings are 89% for AirSculpt and 59% for CoolSculpting. Read those as a poll of self-selected reviewers, not as an outcome.
Neither device was cleared because FDA reviewed proof that it works. Both went through the 510(k) route. That route asks whether a device is much the same as one already legally on sale.
For AirSculpt the file contains no clinical trial at all: The summary says so directly. That is not unusual for liposuction hardware, because the technique is old and the chain of earlier devices is long. But it does mean the FDA record tells you nothing about results, complication rates or recovery for this branded procedure.
For CoolSculpting the file does contain trials, and it is worth knowing what their main endpoint was: In most of the clearances, the main measure was whether three blinded reviewers could pick the baseline photograph out of a pair. In the pivotal under-chin study of 60 people, run by the manufacturer, they did so 91% of the time, against a pre-set bar of 80%. The fat measurement in that study was a secondary endpoint: 0.20 cm of fat-layer thickness by ultrasound at 12 weeks. Both numbers are real. Only one of them is a measurement of fat.
Durability is the weakest part of the cryolipolysis record: The long-term published evidence is two men photographed at 2 and 5 years, and the same two men again at 6 and 9 years. There is no measured long-term group.
FDA puts it plainly on its own body contouring page for patients, last updated 15 October 2025: "Non-invasive body contouring does not treat obesity or improve your health. It will not result in weight loss or contribute to the health benefits associated with weight loss." The maker's own safety information for CoolSculpting Elite says the procedure is not a treatment for weight loss. It also says it does not replace diet, exercise or liposuction.
Liposuction is not a weight-loss operation either. One prospective series covered 301 liposuction and tummy-tuck procedures. Mean weight change after lower-body liposuction was 2.2 lb. What surgery changes is shape.
The body mass index of 30 in the CoolSculpting indication is a ceiling on who can be treated. It is not a target to be moved. No clearance in this category names weight, body mass index or obesity as something the device treats.
Paradoxical adipose hyperplasia is a firm, painless, clearly edged swelling of a cryolipolysis-treated area. The fat ends up bigger than it was before. It appears months after treatment and does not go away on its own. Published incidence estimates disagree by about a hundredfold, largely because some count cycles and some count patients.
Correcting it means surgery, and the surgery is liposuction: In an 11-case single-centre series, 7 patients had surgery. Six had liposuction alone and 1 had liposuction plus a tummy tuck. Three of those 7 needed a second procedure. The authors advise waiting until the area softens, usually 6 to 9 months, before operating. More cryolipolysis makes it worse. One patient who had further treatment to an affected area had more tissue growth two months later.
There is an obvious irony on this page. The known fix for the rare bad outcome of the non-surgical option is the surgical option.
Tell whoever is treating you if you have cryoglobulinaemia, cold agglutinin disease or paroxysmal cold haemoglobinuria: These three rule out CoolSculpting completely in the maker's safety information. All three are blood disorders in which cold damages red blood cells. That is the logic that links them.
Say so if you have a hernia in or near the area, or a repaired one: Hernia appears in FDA's class-level risk list for non-invasive body contouring. It also appears in CoolSculpting's own precautions, and in the reported adverse events for this device class. It is worth being checked before any abdominal treatment, surgical or not.
Bleeding disorders and blood thinners need to be disclosed in advance for either option, and they matter more for the surgical one: So do poor circulation or reduced feeling in the area, cold urticaria, Raynaud's disease, recent surgery or scarring in the area, and any implanted device.
Ask who would manage a complication: When paradoxical adipose hyperplasia has been reported in the literature, the corrective procedures were liposuction and abdominoplasty. One published series pointed out that these are "not in the armamentarium of non-plastic surgeon practitioners". Ask, before you book, who you would be sent to.
Fever or chills after either procedure
Redness spreading outward from a treated area or an incision, visibly worse hour by hour
Pus or foul discharge from an incision or the skin
An access site that opens up or bleeds heavily
These are signs of a spreading infection or a wound problem. They need urgent care the same day.
A firm, well-defined lump appears in a CoolSculpting-treated area two to six months later, above all if its shape matches the applicator
Numbness in a treated area is still there beyond about three months
Pain is rising after the first few days instead of settling
The treated skin darkens a lot over the following weeks
An area starts to look dented or hollow next to the other side
Swelling after liposuction is getting worse rather than slowly settling
Blistering, crusting or an open patch appears on treated skin