Contour shots shrink fat (it returns); destroy-type removes cells. Know the difference.
๐ Demystifying Fat Dissolving Injections ยท Series Contents
1. What are Fat Dissolving Injections
1.1 How They Work ยท Difference from Contour Injections (Current Article)
2. Ingredients & Products
3. Side Effects & Safety
4. Selection
You have probably heard the saying, "Just one fat-dissolving injection will melt away your double chin." However, the single word 'melt' actually covers two completely different processes.
One is actually destroying the fat, and the other is temporarily shrinking its size. If you don't know this difference, it's easy to get disappointed and wonder, "I definitely got the injection, so why did it come back?"
Quick answer: 'Melting' refers either to destroying fat cells or simply shrinking their size. What actually gets rid of fat for good are cell-destroying types like Deoxycholic Acid, Cholic Acid, and Double Slim.
There are two ways to 'melt' fat
Not all fat dissolving injections are the same. They are broadly divided into two types based on how they work.
Classification | Cell-Destroying Type | Shrinking Type (Contour Injection) |
|---|---|---|
What it does | Eliminates fat cells | Only shrinks the size of fat cells |
Longevity | Destroyed cells do not return | Can grow back over time |
Representative Examples | Deoxycholic Acid, Cholic Acid, Double Slim | Standard Contour Injections |
The key is whether it destroys the cells or temporarily shrinks them. The cell-destroying type breaks the cell membranes to actually eliminate the fat cells, so once an area has shrunk, it doesn't easily return. On the other hand, with the shrinking type, the cells remain alive and have the potential to swell up again.
That is why many reviews saying, "I got a fat dissolving injection but it returned to normal," are actually from people who received a shrinking type rather than a cell-destroying type. Even though they go by the same general name, the results are completely different.

In the past, steroids were used for shrinking
There was a time when injections that actually destroyed fat weren't as common as they are today. Back then, professionals took advantage of the properties of steroids like Triamcinolone*.
* Triamcinolone: A type of steroid. It has the effect of shrinking fat at the injection site, so it was used in the past to reduce volume.
Steroids work by shrinking the fat at the injection site, which was used to achieve the desired effect. However, this shrinking could result in an uneven, bumpy appearance, was difficult to predict, and carried the risk of skin depression. Even if the volume is reduced, if it doesn't shrink smoothly, it can end up causing more concern.
Meanwhile, due to the limitations of standard contour injections that allowed fat to grow back, there was a long-held perception that "fat injections produce vague results."

Entering the era of true fat elimination
The turning point came a few years ago, when Deoxycholic Acid-based injections (such as V-Olet) became established in the market. From this point on, treatments shifted from temporarily shrinking fat cells to actually destroying them.
Deoxycholic Acid (DCA)* is a bile acid component that our bodies naturally use to digest fat. It directly breaks down the fat cell membranes, destroying the cells.
* Deoxycholic Acid (DCA): A type of bile acid that emulsifies and breaks down fat. It is a key ingredient approved by the MFDS (Ministry of Food and Drug Safety) for fat reduction.
Since then, treatments have progressed further towards reducing swelling and irritation. This includes Cholic Acid components (NewViju) or custom clinic-formulated combinations that incorporate anti-inflammatory ingredients with precise cannula delivery (Double Slim). Today, the main options for "true fat elimination" are Deoxycholic Acid, Cholic Acid, and Double Slim. We will explore the differences between each of these in upcoming articles.
Checking these ingredients and medical device/pharmaceutical approval information is just as crucial for safety as it is for efficacy.

Where is this treatment most effective?
Cell-destroying fat dissolving injections work exceptionally well in specific, targeted areas.
Pockets of localized fat โ Areas you can easily pinch, such as the double chin or lower cheeks.
Rather than a single session, the treatment is typically performed multiple times at 2 to 4-week intervals. Results gradually become visible around 4 weeks.
Conversely, broadly sagging areas of the face cannot be resolved with fat dissolution. Melting fat in areas of sagging skin can make the face look more hollowed out; in these cases, you should look into lifting treatments designed to pull the skin upward.
Ultimately, the first step is always the same. Decide first whether your concern is indeed 'localized pockets of fat', and if so, choose which ingredient is right for you. Instead of just asking to "melt it away," knowing what you are melting and how is the true starting point.

Frequently Asked Questions
Q. If I get fat dissolving injections, will the fat never come back?
With cell-destroying injections, the eliminated fat cells do not return. However, if you gain a significant amount of weight, the remaining fat cells can still expand, so maintaining a healthy lifestyle after the procedure is very helpful for long-term results.
Q. Are contour injections and fat dissolving injections the same thing?
No, they are different. Contour injections shrink the size of fat cells, meaning they can grow back, while cell-destroying fat dissolving injections eliminate the cells themselves. It is best to check which type you are getting before your procedure.
Q. is a single session enough?
Typically, the procedure is carried out over multiple sessions spaced 2 to 4 weeks apart. Because it takes time for the destroyed fat cells to be metabolized and cleared from the body, this is a treatment that shows progressive, natural changes.
Recommended Reading
Why Your Eyes Look Smaller After Forehead Botox (It's Not Ptosis)
The Reason Why Hongdae Fat Dissolving Injections Didn't Work for You (*Only applicable to DCA)
How Acne Cortisone Injections Work (The Science of Reducing Burn Scars)
The Efficacy of Buccal Fat Dissolving Injections: Why Simply Reducing Volume Can Cause More Sagging

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