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What Causes Double Eyelids to Loosen?

Objet Plastic Surgery · 오브제성형외과의원 · May 13, 2026

What causes double eyelids to loosen? Is it 'this'? Dr. Park Si-hyeon’s summary ​ ​ ​ ​ ​ Hello. This is Objet Plastic Surgery. ​ A double-eyelid line that once looked clearly defi...

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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: Objet Plastic Surgery

Original post date: May 13, 2026

Translated at: May 13, 2026 at 8:31 AM

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

What causes double eyelids to loosen? Is it 'this'?

  • Dr. Park Si-hyeon’s summary

What Causes Double Eyelids to Loosen? image 1

Hello.

This is Objet Plastic Surgery.

A double-eyelid line that once looked clearly defined can gradually become faint over time,

and at some point, you may notice that one side has loosened.

This happens more often than you might think.

Seeing the line in the mirror fade day by day can feel unsettling.

Today, for those of you in that situation, I’ll explain why a double-eyelid line may appear to loosen in three main ways.

If you read to the end, it may help you find the right direction.

Cause of loosening double eyelids? 'A line that doesn't suit my eyes'

Let me start with the conclusion.

The most common reason is forcing a line that does not match your eye structure.

What Causes Double Eyelids to Loosen? image 2

When people think about why a line loosens, they often assume, 'it was just a failed surgery.'

But in reality, there are many cases where things were already off at the stage of designing the initial line.

Everyone is born with different eye lengths, different skin thickness, the amount of fat in the eyelid area,

the strength of the eyelid-opening muscles, and even the degree of the epicanthal fold.

What Causes Double Eyelids to Loosen? image 3

This is why the same line can produce different results.

In particular, a flashy semi-out line or a design that simply copies a celebrity’s eyes is a typical case that can lead to loosening of the double eyelid.

If you try to force a line that your eyes cannot properly support, the sutured area cannot withstand that tension and may gradually loosen,

or it may appear faint as the line becomes blurred.

In the end, the issue is not the line itself, but the result of copying the appearance without finding a line that suits your own eyes.

If it keeps loosening after buried suture surgery? The reason is 'here'

When looking into double-eyelid surgery, people often think deeply about whether to choose the buried suture method or the incision method.

Getting this choice wrong is another reason why the line can appear to loosen.

What Causes Double Eyelids to Loosen? image 4

Many people tend to think, 'buried suture is natural, and incision is burdensome,'

but in reality, it is not that simple.

The buried suture method is a way of creating the line with fine thread.

If the skin is thin, there is not much fat,

and the eyes are not sagging, a clear line can be created with buried suture alone.

Recovery is also relatively quick.

On the other hand, the story changes if the skin is thick, there is a lot of fat in the eyelid area, or the skin has sagged to some degree.

If buried suture is applied to these eyes, the weight of the skin, fat, and tissue makes it difficult for adhesion to form stably,

and the line may loosen more quickly than expected.

That is why, in such cases, the incision method is also considered.

What Causes Double Eyelids to Loosen? image 5

It removes the necessary amount of skin, fat, and muscle,

and directly creates the space where the line can settle,

so depending on the eye condition, it may help the line last longer.

Unlike the common belief that 'incision always looks obvious,'

if it is performed to suit your eye condition, it can actually lead to a more natural result.

Among people whose double eyelids keep loosening, there are also cases where the eyes were better suited to the incision method from the start, but buried suture was chosen and the same issue kept happening.

What Causes Double Eyelids to Loosen? image 6

What if the line is formed but still looks loosened? The real 'cause' is elsewhere

In some cases where the line appears loosened, the adhesion has not actually come apart. The line is still in place,

but it is hidden by other factors, creating what is known as a 'false loosening.'

A typical case is when the eyelid-opening strength is weak.

What Causes Double Eyelids to Loosen? image 7

If ptosis is present, the completed line is covered by the upper eyelid and gradually becomes obscured.

Unlike an actual separation of adhesion, the line itself is still there, but it is more like it has been buried under the upper skin.

In such cases, eyelid correction should be performed together to compensate for the weakened eye-opening strength so that the line appears in the right position.

Conversely, if the eye-opening strength is already sufficient and eyelid correction is added too aggressively, the eyes may look overly wide or leave an artificial impression.

That is why eyelid correction is not something that suits everyone; it should be decided carefully based on the condition.

Next is the epicanthal fold.

What Causes Double Eyelids to Loosen? image 8

For those with a strong epicanthal fold at the inner corner, the front part of the double eyelid may look cramped and hidden, so the curve can appear broken.

In such cases, adding an epicanthoplasty to help the line flow naturally can create a more harmonious result.

The amount of fat also needs to be checked.

If there is a lot of fat in the eyelid area, the upper part of the line can look congested, and it may be difficult for the line to form deeply, so some reduction may be needed.

However, if too much fat is removed, the eyes may look hollow, or give a tired, aged impression,

so finding the right balance is important.

What Causes Double Eyelids to Loosen? image 9

Only by examining these various factors together and forming the line accordingly can the result settle comfortably without the double eyelid loosening.

Today, I summarized why a double-eyelid line may appear to loosen from three perspectives.

First, when the line does not suit my eye structure.

Second, when the chosen surgical method does not match the eye condition.

Third, when the line is formed but appears loosened because it is hidden by other factors.

If you look only at the line, it is easy to keep repeating the same issue,

so I hope you will keep that in mind.

What Causes Double Eyelids to Loosen? image 10

When Dr. Park Si-hyeon of Objet Plastic Surgery performs double-eyelid surgery,

she carefully examines the eye structure, including skin thickness, the amount of fat, eye-opening strength, and the condition of the epicanthal fold, then determines the surgical approach that best matches the eye.

What Causes Double Eyelids to Loosen? image 11

She designs the surgery by checking one by one whether buried suture or incision will settle more stably in the patient’s eyes,

and whether eyelid correction or epicanthoplasty should be performed together.

To prevent a return to loosened double eyelids, I recommend calmly checking the line that suits your own eyes first.

This has been Objet Plastic Surgery.

Thank you.

<🔽🔽A video you may find helpful🔽🔽>

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  • This post is medical information written by Objet Plastic Surgery Clinic in compliance with the Medical Advertising Act.

  • Treatment effects may vary depending on the individual, and side effects may occur. We recommend that you make the decision to undergo treatment only after sufficient consultation with the medical staff in advance.

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