Lip Filler: What to Settle Before Deciding How Much

The lips are where the eye settles first when you smile or speak. Even a small change alters the impression they give.

Lately more people have been asking for a shape that connects naturally with the rest of their features rather than simply fuller volume. The lips work under different conditions from other areas, though, and that naturalness does not come from adding volume alone. Today we will set out why.

The lips have a thin epidermis and dense blood vessels, and they move without pause while you talk and eat. Place a firm or highly cohesive formulation there and it cannot follow the movement when you make an expression, which can make the edge visible. What has to be settled first with lip filler is therefore not how much to fill but which formulation and placement method can follow the movement.

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Why is lip filler different from other areas?

The lips are one of the most mobile areas of the face in terms of muscle movement.

Because that movement repeats countless times a day, applying a firm formulation intended for other areas as it is can make the edge feel unnatural on expression, or leave a hard texture. The thin epidermal layer and the dense distribution of blood vessels have to be taken into account alongside this.

Where lip filler looks artificial, the cause is usually not the amount but the formulation failing to follow the movement.

What is different about a lip-specific formulation?

The formulation used on the lips at NUWA Clinic Gangnam is a hyaluronic acid type developed for the lip area.

Made with a soft gel texture in a mesh structure, it is designed to adapt flexibly within moving tissue. At the same time it carries the elasticity needed to hold the Cupid’s bow and the border of the lip, so softness and shape retention can be addressed together.

It contains lidocaine, a local anaesthetic, so discomfort tends to be less even in an area as nerve-sensitive as the lips. A lip-specific formulation exists not because of a difference in performance but because the balance between flexibility and support has been adjusted to the conditions of the lips.

Does lip filler shorten the philtrum?

Lip filler does not only change the shape of the lips; it also connects to the proportions of the lower face as a whole.

Where the upper lip is rolled inwards, the philtrum looks longer and the lower face looks flat. Adjusting the volume of the upper lip to lift the rolled portion can create the visual impression of a shorter philtrum.

The length of the philtrum itself does not actually shorten, though, so how different it looks varies with the original shape and proportions of the lips. In other words, the impression of a longer philtrum depends not on lip filler alone but on the proportions of the lower face running from beneath the nose to the chin.

How is the approach divided by type?

Concern	Direction of approach
Thin lips rolled inwards	A small amount placed inside the upper lip to lift the rolled portion
Asymmetry between the two sides	Placement focused on the thinner or lower side to balance the Cupid’s bow
Lined, crinkled lips	Hydration and resilience added along the surface to smooth fine lines

To sum up, even with the same lip filler, placement and amount change depending on whether the goal is volume, symmetry or surface smoothing.

How long does it last?

Because the lips move so much, formulations break down faster there than in other areas.

How long it lasts varies with the type of formulation, the amount placed and individual metabolic rate, so a single figure is difficult to give. We decide the next point together after following how things progress.

Hyaluronic acid types break down and are absorbed by the body over time, so there is relatively little burden of previous material accumulating when the procedure is repeated. The lips break formulations down quickly but are also easy to reverse, so adjusting in stages is safer than placing a large amount at once.

What should be watched afterwards?

• Swelling and bruising — these may appear for a few days afterwards and mostly settle within several days. The lips are an area where swelling shows readily.
• No pressure — while the formulation settles, please avoid pressing the lips firmly or drawing them inwards.
• Hot environments and alcohol — it is best to avoid saunas, steam rooms and vigorous exercise for a few days.
• Irritating food — please ease off very hot or strongly spiced food for a while.

What is needed straight after the procedure is less active care than leaving the area alone while the formulation settles. If flat lips or fine lines have been on your mind, deciding which shape suits your features comes before deciding how much to fill. If you are planning to visit our clinic near Gangnam Station, we will go through it together at the consultation.

NUWA Clinic Gangnam, which proposes a direction suited to your skin through one-to-one diagnosis, is located directly in front of Exit 7 of Gangnam Station, on the 3rd and 4th floors at 385 Gangnam-daero, Seocho-gu, Seoul.

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Frequently asked questions

Q. Won’t lip filler look unnatural?

A. Where it looks artificial, the cause usually lies in the formulation and placement method rather than the amount. A firm formulation cannot follow the movement on expression, so the edge becomes visible. We approach it by placing a formulation suited to the conditions of the lips in small divided amounts.

Q. Is lip filler very painful?

A. The formulation contains lidocaine, a local anaesthetic, so discomfort tends to be less. The lips are a nerve-sensitive area, though, so how much is felt varies from person to person.

Q. How long does the swelling last?

A. Swelling or bruising may last for a few days afterwards and mostly settles within several days. Swelling shows readily on the lips, so if you have an important date coming up, it is best to allow some margin.

Q. My philtrum looks long. Would this help?

A. Where the upper lip is rolled inwards, adjusting the volume to lift it can create the visual impression of a shorter philtrum. The actual length does not reduce, however, and how much you notice varies from person to person.

Q. Can it be reversed if I don’t like it?

A. Hyaluronic acid types break down and are absorbed by the body over time. Adjustment can be discussed if needed, so please tell us as you follow how it settles afterwards.

Q. My lips are different on each side. Can they be matched?

A. We approach it by placing the formulation mainly on the thinner or lower side to balance the Cupid’s bow. The result can vary with the original degree of asymmetry and with muscle movement, though, so accurate diagnosis comes first.

*Effects and results of this procedure may vary with individual condition, and responses such as swelling, bruising or discomfort may appear afterwards. Accurate diagnosis and the decision on whether to proceed should be made through consultation with the medical team.