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3 Things to Check to Avoid a Duck-Lip Look with Hongdae Lip Fillers

차이의원 · 아름다움의 차이, 차이의원입니다. · November 27, 2025

Hello. I’m Dr. Jo Won-jin, and I’ve been seeing patients for 10 years. I want lip fillers that look natural, but I’m afraid they might be overdone if they’re placed incorrectly. Wh...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: 차이의원

Original post date: November 27, 2025

Translated at: April 20, 2026 at 6:23 PM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

Hello. I’m Dr. Jo Won-jin, and I’ve been seeing patients for 10 years.

3 Things to Check to Avoid a Duck-Lip Look with Hongdae Lip Fillers image 1

I want lip fillers that look natural,

but I’m afraid they might be overdone if they’re placed incorrectly.

When you see the overly exaggerated, unnatural lip shape that sometimes appears on social media, often called a duck lip, it makes you hesitate about getting the procedure.

The lips are the area with the thinnest skin and the most movement on our face.

So even a slight difference in volume can change the impression quite a bit.

Under the topic of “3 Things to Check to Avoid a Duck-Lip Look with Hongdae Lip Fillers,”

I’d like to explain the 3 criteria for a filler treatment without mistakes.

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Table of contents

  • Look at harmony rather than only volume and ratio

  • Check whether the filler’s properties suit you

  • Consider the corners of the mouth as well

  1. Look at harmony rather than only volume and ratio

"Can you use the full 1 cc?"

This is a question I often get during consultations.

What you should be most careful about with Hongdae lip fillers is an approach that focuses only on filling a set amount.

Everyone has different lip width, philtrum length, and chin shape.

If filler is injected without considering these factors, the result can look awkward, as if the lips are floating separately from the face.

These days, the preferred lip shape has changed a lot compared to before, to the point where the ratio of the upper and lower lips is often close to 1:1.

But more important than that number is how well it suits your face.

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For example, if your philtrum is on the longer side, adding a little more volume to the upper lip can make the philtrum look shorter,

and if your chin is short, you should not emphasize the lower lip too much so that the overall balance stays right.

These days, we usually do not make the lips tight and overly full like a balloon packed with air.

We tend to keep a natural texture that lets the original lines show slightly,

while adding the missing volume.

Even if you bring in a photo you want to match, adjusting it to fit your own face usually leads to much higher satisfaction.

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  1. Check whether the filler’s properties suit you

"It’s been quite a while since I got filler,

but my lips feel hard and I can feel a foreign-body sensation."

Some people come in after Hongdae lip filler treatments complaining of this kind of discomfort.

This usually happens when a filler with overly firm properties is used without considering the characteristics of the lips.

The lips are a dynamic organ that moves nonstop all day as we talk and eat.

The approach should be completely different from areas like the nose or chin, where the shape needs to be held firmly.

What if a firm, bead-like filler were placed into soft, jelly-like lip tissue?

When you smile or talk, the filler may not move with the muscles, causing it to stand out awkwardly or bulge unevenly.

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Therefore, you should choose a soft filler formulation with a proper balance of viscosity and elasticity.

That way, it feels natural, almost like your own tissue, and it does not look awkward when you make facial expressions.

Another thing I consider important is whether the filler still looks good as it gradually loses volume.

If the filler clumps together or does not dissolve well, it can become a problem.

So it is better to think ahead about how it will look as it settles and softens.

In actual procedures as well, after checking the thickness of the patient’s lip skin and the strength of the muscles,

I usually recommend the product that will cause the least foreign-body sensation.

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  1. Consider the corners of the mouth as well

Just as important as lip volume is the connection to the corners of the mouth.

If only the central part of the lips is made plump and the lines toward the corners are not refined,

the lips can actually look droopier because of the weight.

This is why the lips may have volume but still somehow look sad or a little grumpy.

Natural, attractive lips have a line that gently lifts toward the corners, as if they are holding a slight smile even when relaxed.

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So sometimes, instead of simply filling with filler, it is necessary to adjust the strength of the muscle that pulls the corners of the mouth downward.

If needed, corner-of-the-mouth Botox may be combined, or Hongdae lip fillers may be used to support a drooping lip line.

The goal is not simply to make the lips “plump,” but to approach it from the perspective of “correcting the lip line.”

That is how you can create natural dimensionality, rather than a protruding duck lip, whether viewed from the side or when smiling.

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In fact, even as I explain these different criteria,

I think it is difficult for people receiving treatment to know all the know-how unless they are the one performing the procedure.

If a clinic does not need to be told and still gives you a treatment that suits you well and is safe, how should you choose it?

If you read the article below, at the very least you should be able to weed out unethical dermatology clinics.

3 Key Takeaways

Let me summarize the 3 criteria for avoiding a duck-lip look one more time.

  • Ratio: Custom design that considers the desired image, philtrum length, and chin length

  • Properties: Choose a soft filler that suits the lips’ high-mobility nature and does not cause a foreign-body sensation

  • Line: A lip-line correction approach that prevents corner drooping and creates a smile line

If you keep these three points in mind during your consultation,

Hongdae lip fillers can reduce your worry about side effects and help you achieve a much more satisfying result.

Because the lips are an area where even a very slight difference can determine the impression,

rather than focusing only on price or volume,

I recommend checking how carefully the practitioner analyzes your face.

Thank you. This was Dr. Jo Won-jin.

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