Rebeauty

2026-07-14

Semi-Outline and In-Outline Double Eyelid Types (Epicanthal Fold)

Discover the differences between semi-outline and in-outline double eyelids, and determine which style best suits your eyes, considering factors like the epicanthal fold.

Semi-Outline and In-Outline Double Eyelid Types (Epicanthal Fold)

Hello, this is VAVA Plastic Surgery.

As more people nowadays desire a ‘natural yet defined impression’, the trend in double eyelid surgery is becoming increasingly delicate.

Especially regarding double eyelid lines, semi-outline and in-outline are currently preferred by those who want to achieve both naturalness and a defined look.

However, it can be difficult to determine the exact difference between these two lines and which one suits your eyes better on your own.

So today, we will explore ‘double eyelid lines that suit your eyes (semi-outline, in-outline)’.


Types that suit in-outline and semi-outline well
What are the different types of double eyelid lines? In-line, In-outline, Semi-outline, Out-line

In-line = A natural double eyelid-like line of about 1-2mm when the eye is open by about 2mm, where only the back part of the double eyelid line is thinly visible.

* Since the eyelid droops by about 1mm every 5 years, if you start with an inner crease, it can quickly become hidden.*

In-outline = An intermediate line between in-line and out-line, where the double eyelid line at the inner corner of the eye starts from the inside and gradually thickens towards the back.

Out-line = A Western-style double eyelid line where the starting point of the double eyelid at the inner corner of the eye is high.

Semi-outline = An intermediate line between in-outline and out-line, which is more glamorous than an in-outline but more natural than an out-line double eyelid line.


Key points for Semi-outline and In-outline

* Semi-outline and in-outline can also be divided into two categories: natural and glamorous lines.

This distinction depends on how much the starting point of the double eyelid line, which begins from the epicanthal fold at the inner corner of the eye, is lifted.

In the case of an in-outline, the feel of the double eyelid can vary greatly depending on the degree of epicanthal fold release.

The epicanthal fold can be broadly divided into two types: anterior and superior.

If you desire a refreshing in-outline, the epicanthal fold needs to be sufficiently opened so that the double eyelid line at the inner corner of the eye is not buried and maintains a consistent line.

Similar to the in-outline, the semi-outline is also related to the epicanthal fold.

However, for a semi-outline, the angle of the epicanthal fold plays a crucial role in the overall double eyelid appearance.

If the angle of the epicanthal fold is vertical or if the skin is thick,

there is a high probability that the desired beautiful semi-outline double eyelid line may not be achieved.

In such cases, if the angle of the epicanthal fold is forced to be raised, the line at the inner corner of the eye may become unnatural or ‘kinked’.

If the starting point of the double eyelid line is too close to the inner corner of the eye or the line is too long, extending to the lacrimal caruncle,

it can result in a scar and make the eyes appear fierce.

Therefore, if you desire an ideal semi-outline, it is recommended that the starting point of the double eyelid line begins approximately 3mm away from the inner corner of the eye.

Despite this, if you still desire a semi-outline, it is possible to create the line by changing the angle, but

it may lack naturalness, and there may be limitations.

Before & After Photos VAVA Plastic Surgery
Recommended Candidates for Each Double Eyelid Line

In-outline

  • Those who desire a natural look after surgery
  • Those with slightly drooping outer corners of the eyes or non-pointed inner corners of the eyes

Semi-outline

  • Those who desire clear and glamorous facial features
  • Those who frequently wear makeup
  • Those whose epicanthal fold angle is not vertically oriented

Today, we have explored the types of double eyelid lines, the differences between semi-outline and in-outline, and suitable candidates for each.

As emphasized earlier, choosing a double eyelid line requires considering structural aspects, not just personal preference.

Therefore, if you are considering eye surgery, we recommend a thorough consultation with an experienced specialist to accurately

identify the underlying factors and design the most suitable line to enhance both your overall aura and eye expression.

This has been VAVA Plastic Surgery. Thank you.

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