Just as some people are right-handed and others are left-handed, the facial expression muscles are often different on the left and right sides of the face.
Everyone has a slight degree of asymmetry, so a mild asymmetry is natural. But when you look in the mirror and smile, one side may move the expression muscles more actively than the other side.
Among these expression muscles, there is one that stands out: the eyebags are one of them.

Asymmetry of the eyebags
What is called the eyebags is part of the orbicularis oculi muscle, which surrounds the eyeball.

Three compartments of the orbicularis oculi muscle
The orbicularis oculi muscle can anatomically be divided into three parts.
They are pretarsal, preseptal, and orbital, and the part that creates the eyebags is the pretarsal orbicularis oculi muscle.

Eyebags created by the pretarsal orbicularis oculi muscle
Even the pretarsal orbicularis oculi muscle that creates the eyebags can become asymmetric left to right, and in some cases a large difference between the two sides can become a source of stress.
Methods for creating eyebags include filler and fat grafting. In the case of fillers, they can show through the thin skin under the eyes, and another drawback is that they can soften or fade over time.
In contrast to fillers, fat grafting for eyebags does not show through, and because it survives by taking root in the pretarsal orbicularis oculi muscle that creates the eyebags, it does not soften or fade over time.
However, eyebag fat grafting must be done using finely processed fat.

Filtering autologous fat
A filtration process for microfat is needed to graft finely processed fat, which leads to higher satisfaction.

Micro fat grafting for eyebags
It is important to delicately graft fat with finely made particles into the pretarsal orbicularis oculi muscle under the eyes using a special cannula, and in cases of asymmetric eyebags, the amount of fat to be grafted must be adjusted even more carefully.
And there is one important factor for people who want to create eyebags: whether or not they have dark circles under the eyes.

Under-eye fat and tear troughs that create dark circles
If dark circles are noticeable, it is important to clean up the under-eye area through lower eyelid fat repositioning and then perform eyebag fat grafting.

The procedure for lower eyelid fat repositioning
Let’s compare the results before and after surgery.

One month after lower eyelid fat repositioning and eyebag fat grafting
Through lower eyelid fat repositioning, the dark circles under the eyes were improved, and the asymmetric eyebags settled into a more symmetrical appearance.

Correction of eyebag asymmetry. This is a real model who consented to disclosure. Eyebag fat grafting review. Eyebag fat grafting review.
For cases where the eyebags under the eyes are asymmetrical, microfat grafting, which is relatively simple and semi-permanent, can be a good option.