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Types That Suit Semi-Outer and Inner-Out Double Eyelid Lines Well (Epicanthal Fold)

바바성형외과 · 바바성형외과의원 · April 11, 2025

Hello, this is Baba Plastic Surgery. As more people have been wanting a look that is “natural yet defined,” trends in double eyelid surgery have become increasingly refined. In par...

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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: 바바성형외과

Original post date: April 11, 2025

Translated at: April 24, 2026 at 2:17 AM

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

Types That Suit Semi-Outer and Inner-Out Double Eyelid Lines Well (Epicanthal Fold) image 1

Hello, this is Baba Plastic Surgery.

As more people have been wanting a look that is “natural yet defined,” trends in double eyelid surgery have become increasingly refined.

In particular, among double eyelid lines, semi-outer lines and inner-out lines are popular with people who want to achieve both naturalness and a defined look. However, it can be difficult to judge on your own exactly how these two lines differ and which line suits your eyes better.

Today, we will look at “the double eyelid line that suits my eyes (semi-outer, inner-out line).”

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Types that suit inner-out and semi-outer lines well

What are the different types of double eyelid lines?

Inner line, inner-out line, semi-outer line, outer line

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Inner line = A line that looks like a natural double eyelid when the eyes are opened about 2 mm, with only about 1–2 mm visible at the back

Because eyelids sag by about 1 mm every 5 years, if the line is made too narrowly from the start, it can quickly become hidden.

Inner-out line = A line between an inner line and an outer line; the double eyelid line starts from the inner corner of the eye and becomes thicker toward the back

Outer line = A Western-style double eyelid line, with the starting point of the double eyelid at the inner corner of the eye positioned high

Semi-outer line = A line between an inner-out line and an outer line; more pronounced than an inner-out line, but more natural than an outer line

Key points of semi-outer and inner-out lines

  • Semi-outer and inner-out lines can be divided into two types: a more natural line and a more striking line.

This distinction depends on how elevated the starting point of the double eyelid line is from the epicanthal fold at the inner corner of the eye.

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Types That Suit Semi-Outer and Inner-Out Double Eyelid Lines Well (Epicanthal Fold) image 8

In the case of an inner-out line, the appearance of the double eyelid can vary greatly depending on how open the epicanthal fold is.

The epicanthal fold can broadly be considered in two ways at the front upper area.

If you want an inner-out look that makes the eyes appear more open, the epicanthal fold needs to be opened to some extent so that the double eyelid line at the inner corner of the eye is not hidden and can create a consistent line.

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Types That Suit Semi-Outer and Inner-Out Double Eyelid Lines Well (Epicanthal Fold) image 10

A semi-outer line is also related to the epicanthal fold, just like an inner-out line, but for a semi-outer line, the angle of the epicanthal fold plays an important role in the overall double eyelid appearance.

If the epicanthal fold stands almost vertically or the skin is thick, the chances of achieving the desired pretty semi-outer double eyelid line are low.

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Types That Suit Semi-Outer and Inner-Out Double Eyelid Lines Well (Epicanthal Fold) image 12

In that case, if the angle of the epicanthal fold is forced upward, the line at the inner corner of the eye may become kinked.

If the starting point of the double eyelid line is too close to the inner corner of the eye, or if the line is too long and extends to the lacrimal caruncle, the resulting scar can make the eyes look sharp.

Therefore, if you want an ideal semi-outer line, it is recommended that the starting point of the double eyelid line begin about 3 mm away from the inner corner of the eye.

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Even so, if you want a semi-outer line, the line can be created by changing the angle, but it may lack naturalness, and there may be limitations.

Before-and-after photos Baba Plastic Surgery

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Recommended candidates by double eyelid line

Inner-out line

Those who want a natural look after surgery

Those with slightly drooping outer corners of the eyes or inner corners that are not sharply pointed

Semi-outer

Those who want distinct and glamorous facial features

Those who usually wear makeup often

Those whose epicanthal fold does not stand vertically

So today, we looked at the types of double eyelid lines, the differences between semi-outer and inner-out lines, and the suitable types.

As mentioned earlier, choosing a double eyelid line is not something you can decide by 고민 alone, because structural factors also need to be considered.

If you are considering eye surgery, we hope you will receive 충분한 상담 from an experienced specialist, identify the exact cause, and design the line that suits you best so that you can achieve both the desired mood and eye expression.

This has been Baba Plastic Surgery. Thank you.

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