CoolSculpting
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CoolSculpting Vs. Zerona
CoolSculpting destroys fat cells, so the change in that area stays. It freezes a pinched fold for 35 to 45 minutes, and most areas need two rounds. Zerona leaves the fat cells in place. A low-level laser is held over the skin for about 20 to 40 minutes, painlessly, and the claim is that fat cells leak some of their contents rather than dying. That is the whole difference: one takes cells away, the other empties them a little and hands them back.
At a glance
| The difference | CoolSculpting | Zerona |
|---|---|---|
| What it does to the fat cell | Damages it, so the body clears it | Empties some of it, and leaves it |
| What it feels like | A hard pull, then deep cold | Nothing |
| Cost | Priced per cycle, and plans use several | Priced as a block of six sessions |
| What the measurement actually is | CoolSculpting is judged differently. | Zerona's headline number is a tape measure. |
Zerona
Empties some of it, and leaves it The stated mechanism is that the cell releases part of its stored fat and stays alive. Your body then has to use or store that fat somewhere.
Side by side
The differences that matter
What it does to the fat cell
CoolSculpting
Damages it, so the body clears it
Cold injures the fat cells inside the applicator. Over the following weeks your body carries the dead cells away.
Zerona
Empties some of it, and leaves it
The stated mechanism is that the cell releases part of its stored fat and stays alive. Your body then has to use or store that fat somewhere.
What it feels like
CoolSculpting
A hard pull, then deep cold
The cold fades to numbness within about ten minutes. The massage at the end is the part people remember.
Zerona
Nothing
Nothing touches you but light. There is no heat, no suction and no discomfort at all.
A session
CoolSculpting
About 35 to 45 minutes per applicator
Zerona
About 20 to 40 minutes
How many visits
CoolSculpting
Usually two rounds per area
Spaced four to eight weeks apart, then you are done.
Zerona
Six sessions in about two weeks
Clinics often sell repeat blocks after that.
How long until you see it
CoolSculpting
Six to twelve weeks
Nothing useful shows in the first few weeks.
Zerona
Within about two weeks
The change is measured with a tape rather than judged from photographs.
How long it lasts
CoolSculpting
The treated fat cells are gone
The cells left behind can still enlarge, so a weight gain will show.
Zerona
Depends on what you do next
The fat cells are still there and can refill. Results are usually described alongside diet and activity advice.
The main downside
CoolSculpting
Fat can rarely grow instead
Paradoxical adipose hyperplasia: months later the treated area becomes firmer and larger rather than smaller. It affects about 0.22% of people, roughly 1 in 455, and liposuction corrects it.
Zerona
A soft, easily lost result
Nothing is removed, so nothing is banked. If your habits do not change, there is little reason for the change to hold.
Cost
CoolSculpting
Priced per cycle, and plans use several
Zerona
Priced as a block of six sessions
The at-home or drugstore version
CoolSculpting
Freezer wraps are a different thing
A gel pack starts cold and warms up while you wear it. The clinic device holds one steady temperature for the whole session, and that is what damages the fat cell.
Zerona
Home laser belts are much weaker
Cheap laser or LED belts put a fraction of the power into the surface. This is a case where the home version is a weaker copy rather than a different idea.
Who each suits
CoolSculpting
- Best for — A roll you can hold between two fingers, when you want it permanently smaller.
- The mindset — One area, one problem, and a wait of a few months.
Zerona
- Best for — Someone who wants a comfortable, quick course with nothing invasive at all.
- The mindset — You are already changing your habits and want a nudge alongside them.
What the measurement actually is
CoolSculpting
CoolSculpting is judged differently. Its results are usually described as a thinner fat layer under the applicator, seen in photographs taken weeks apart.
Zerona
Zerona's headline number is a tape measure. The maker's placebo-controlled trial reported an average loss of about three and a half inches, and that figure is the waist, the hips and the thighs added together.
Before you book
More photographs
CoolSculpting
Common questions
Questions Patients Ask
Does Zerona actually work?
The maker's placebo-controlled trial did find a real difference in tape measurements against a dummy treatment. The headline figure is the waist, hips and thighs added together, and the fat cells are not destroyed, so the change depends on what you do next.
Which lasts longer, CoolSculpting or Zerona?
CoolSculpting. It destroys fat cells in the treated area and those do not come back. Zerona leaves the cells in place, and they can refill.
Does Zerona hurt?
No. Nothing touches you but light, and there is no heat, suction or discomfort at all. CoolSculpting is uncomfortable for the first ten minutes before the area goes numb.
How many sessions does each need?
Zerona is usually six sessions over about two weeks. CoolSculpting is usually two rounds per area, four to eight weeks apart.
How quickly do results show?
Zerona is measured within about two weeks. CoolSculpting takes six to twelve weeks, because your body has to clear the damaged cells.
Do either of them help loose skin?
No. Both leave the skin as they found it, and thinning the fat under loose skin can make it look slightly looser.
What CoolSculpting risk can appear later?
Fat freezing can occasionally make the treated fat bulge grow rather than shrink, called paradoxical adipose hyperplasia. Ask about this risk and the options if it happens. Other technologies have their own risks; compare the exact devices and intended treatment areas.