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From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best?

21성형외과의원 · 21 PLASTIC SURGERY · September 19, 2025

​ ​ Hello, I’m Director Lee Won from 21 Plastic Surgery. Today, I’d like to introduce the features of the four double eyelid line types. First, double eyelids can be divided into f...

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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: 21성형외과의원

Original post date: September 19, 2025

Translated at: April 20, 2026 at 2:24 PM

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

Hello, I’m Director Lee Won from 21 Plastic Surgery.

Today, I’d like to introduce the features of the four double eyelid line types.

First, double eyelids can be divided into four types: in-line, in-out line, semi-out line,

and out line.

I hope that by looking at the characteristics, pros and cons of each line, and which face shapes

they suit,

this will help you find the most natural and beautiful

eyes for yourself^^

  1. In-Line Double Eyelids

From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best? image 1

Reference for in-line double eyelids

In-line double eyelids begin deeply hidden inside the epicanthic fold at the inner corner of the eye,

and are only slightly visible from the outside.

This is a double eyelid line that gives a natural and East Asian charm.

It suits people whose brows and eyes are close together and who have a lot of fat on the upper eyelid,

making it difficult to create a higher line.

Representative celebrities with in-line double eyelids include

BLACKPINK’s Rosé and LE SSERAFIM’s Kazuha^^

People who prefer a restrained look that is not too flashy

and value naturalness tend to like it a lot.

  1. In-Out Line Double Eyelids

From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best? image 2

Reference for in-out line double eyelids

The in-out line starts off slightly hidden like an in-line at the inner corner of the eye,

then becomes more distinct as it moves outward from the middle.

The in-out line is the most popular and is sometimes called a safe, no-fail line^^

It is a style that is natural yet defined, and can add a feminine impression.

Even people with a slight epicanthic fold can usually choose it,

so it is a double eyelid line that suits most eyes well without being too difficult. .

Representative celebrities with in-out line double eyelids include

Aespa’s Karina and NewJeans’ Hyein.

  1. Semi-Out Line Double Eyelids

From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best? image 3

Red: Out Line / Teal: Semi-Out Line / Blue: In-Out Line

The semi-out line can be thought of as somewhere between the in-out line and the out line.

A feature of this line is that the double eyelid starts from the inner corner, but it is not as high as the out line,

making it suitable for creating a refined, exotic, yet not overly dramatic impression.

The semi-out line is a good choice for people whose brows and eyes are not too close together

and whose facial features are well-defined.

Representative celebrities with semi-out line double eyelids include

BLACKPINK’s Jennie and IVE’s Jang Wonyoung.

If you want a line that is slightly glamorous but not too overwhelming,

I recommend it^^

  1. Out Line Double Eyelids

From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best? image 4

Reference for out line

The out line is a double eyelid line that is widely open from the inner corner of the eye to the outer side.

This line is characterized by its Western, striking look,

and by giving an exotic, cat-like impression.

It suits people whose eyes are large and open without an epicanthic fold,

and those with a bit more distance between the brows and the eyes.

That is why people who want a glamorous image tend to prefer it.

Representative celebrities with out line double eyelids include

actress Han Ye-seul and BLACKPINK’s Lisa.

However, if the conditions are not suitable, the out line can look

unnatural, so it should be chosen carefully!!

Which design should I choose?

A double eyelid line is not necessarily prettier just because it is higher,

and it is not necessarily 답답한 if it is lower.

So when deciding on a double eyelid design,

it is best to consider the distance between the brows and the eyes, the thickness of the eyelid,

the epicanthic fold, and even the strength of the eye-opening muscles,

and choose the line that suits you best

for the most natural and long-lasting result.

The various double eyelid designs such as in-line, in-out line, semi-out line, and out line

all have distinct personalities and features.

To create the eye shape that suits you best,

it is safest and most satisfying to decide on the design after 충분한 consultation with a medical professional.

At 21 Plastic Surgery, we carefully analyze each patient’s eye anatomy and

the image they want,

and provide a customized recommendation for the most appropriate double eyelid design

and surgical method.

21 Plastic Surgery will accompany you on your journey to find beautiful eyes.

If you have any questions, you are always welcome to consult with us.

The biggest goal for me is to help patients regain their natural beauty.

Thank you.

From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best? image 5

From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best? image 6

From In-Line to Out-Line, Which Double Eyelid Design Suits Me Best? image 7

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