2026-11-01
1cc Lip Filler: Check This First, Not Just the Volume, to Avoid a Bad Result
Explains what 1cc of lip filler can achieve and why distribution, bespoke design, and product properties matter more than volume alone when choosing a treatment.

A 1cc lip filler may look like a small amount, but in an area as narrow as the lips, it is enough to create a noticeable change.
However, even with the same 1cc, the result does not look the same for everyone.
This is because the injection sites and distribution vary depending on existing lip thickness and width, the cupid's bow and lip border, philtrum length, and the desired design.

Hello,
I am Song Jong-geun, Chief Director of Pixellab Plastic Surgery in Sinnonhyeon.
I do not view lip filler as a simple procedure for filling in volume. After checking lip movement, left-right asymmetry, and the ratio between the upper and lower lips, I divide the filler and inject it into the areas that need it.
Today, I will explain how much change you can expect from a 1cc lip filler and the criteria to check when choosing an imported filler.
1. How much is 1cc of lip filler?

1cc is equal to 1 mL. It is not injected into the entire lips at once; it is divided and used in the areas that need it, such as the upper and lower lips, the cupid's bow, and the corners of the mouth. Therefore, it is difficult to judge whether the change will be large or small based on the 1cc figure alone.
How the same amount is distributed depends on whether your lips are very thin, whether they have volume but unclear borders, or whether asymmetry needs correction.
If your lips are thin, the filler is divided between the upper and lower lips to improve overall volume.
If your lips already have volume but the contour is unclear, injecting around the lip border and cupid's bow can enhance definition.
If the goal is to correct the shape of the corners of the mouth or the center of the lips, small amounts are injected at specific points rather than filling the entire lip.
Even if you want fuller lips, it is better not to set the amount in advance. Instead, check the shape and movement after the first session, then decide whether to add more.
2. For lip filler, distribution matters more than volume

The outcome of lip filler depends less on whether a full syringe was used and more on where and how much was injected into each area.
If too much filler is concentrated in the upper lip, the lips may appear to protrude forward.
Overemphasizing only the lip border can make the expression look unnatural or make the filler noticeable.
Conversely, when the balance between the center, the cupid's bow, and the lower lip is considered together, a natural dimension can be created even with 1cc.
That is why bespoke design matters. It is not simply about making lips fuller; it is an approach that analyzes the current lip structure, facial proportions, expressions and movement, and the desired image to design a volume and shape suited to the individual.

Even with the same 1cc, the result can be completely different depending on how it is designed and in what order it is injected. That is why, before treatment, I check lip thickness from the front and side, and also observe how the lips move when smiling or speaking.
Through thorough consultation before treatment, I proceed by comprehensively considering the patient's face shape, the proportions of facial features, and even the impression they want to create.
3. Are imported fillers always better?

Just because a filler is imported does not mean every imported product is always superior to domestic fillers.
When choosing a filler, it is important to check the product's physical properties, approved indications, suitability for lip movement, and the medical team's experience with it, rather than focusing on the country of manufacture.
That said, some imported fillers have been used in multiple countries for a long time, and they have the advantage of accumulated clinical data and product-specific physical property data.

Lips are constantly moving when we talk, smile, and eat. Therefore, it is important not only how strongly the filler supports the shape, but also how flexibly it responds to movement.
If a filler is too firm, it may feel foreign when the lips move; conversely, if it is too soft, it may be difficult to maintain the desired contour.
Ultimately, rather than choosing a product that is simply strong or long-lasting, you should choose one whose physical properties match the design you want.
4. What are the three criteria to check for lip filler?


Front close-up of glossy, full-looking lips with a defined shape.
Front close-up of bare lips with a natural, matte look.
|
Even within the same brand, viscosity, elasticity, and softness can differ from product to product. Therefore, rather than choosing based on the brand name alone, it is important to check the product line and physical properties to be used on the lips.
5. When is Juvéderm Volbella considered?

Juvéderm Volbella is a product to consider when you want to express both lip volume and curves.
It is considered when designing lips with dimension or fullness at the center, while ensuring the overall line flows smoothly.
|
At Pixellab, we continue to conduct medical staff training and academic activities related to Juvéderm, and we apply the physical properties and injection techniques of each product to treatment. We are also active members of the Juvéderm Filler Infinity Club, which is selected based on usage volume, and of Learn & Inspire, which is selected based on academic level and treatment technique.
6. When is Restylane Kysse considered?

Restylane Kysse can be considered when delicate contour refinement is needed, such as along the lip border or the cupid's bow.
It is also considered for those who value a natural feel, or for first-time lip filler patients who find excessive volume overwhelming.
|
As a Restylane Master Clinic, Pixellab determines the direction of treatment by considering the characteristics of each product and the injection method for each area.
7. In these cases, you may not need to use the full 1cc

Booking a 1cc lip filler does not mean the entire amount must be injected in one session. If your existing lip volume is sufficient or you only want to refine the lip border, the desired change can be achieved with a smaller amount.
If dry lips are your concern, we also recommend Revive, or Rejuran-based lip treatments such as Lip Vize and Lip Rejuran.
If the lip skin is thin, previous filler remains, or left-right asymmetry is significant, it is better to take a gradual approach rather than injecting a large amount from the start.
|
Frequently Asked Questions

Q1. Won't it look excessive if the full 1cc of lip filler is injected?
It can look excessive depending on your existing lip condition. If your lips are naturally very thin or already have sufficient volume, injecting the full 1cc may look unnatural. For a natural result, the personalized amount should be determined only after a detailed assessment of lip thickness and proportions from the front and side.
Q2. How is the filler divided between the upper and lower lips?
There is no fixed ratio. After checking the thickness and projection of your existing lips and the balance between the upper and lower lips, the volume is distributed to the areas that need it.
Q3. Do imported fillers last longer than domestic ones?
Simply being an imported filler does not guarantee a longer duration. How long it lasts depends on the product's own physical properties (viscoelasticity), the amount injected, and lip movement. Therefore, regardless of country or brand, the most important thing is choosing a filler optimized for your lip movement and target design.
Q4. Can lips feel hard after lip filler?
Right after treatment, swelling can make the lips feel firm or heavy. Most people find they soften as the swelling subsides, but if a hard lump or pain persists for a long time, you should have your condition checked at the clinic.
Q5. Can I start with more than 1cc from the beginning?
Whether more than 1cc is needed depends on your current lip volume, tissue condition, and desired design. Rather than setting the amount in advance, it is better to check the shape and movement after the first session and then decide whether additional injection is needed.
◆ The result of a 1cc lip filler depends on the design
A 1cc lip filler can change lip volume and contour, but it does not produce the same result for everyone.
After checking the thickness and width of your existing lips, the cupid's bow and corners of the mouth, and how your lips move when smiling, I divide the filler and inject it into the areas that need it.
When choosing a filler product, rather than looking only at price or country of manufacture, it is important to check the product's physical properties, its suitability for lip movement, and how well it fits the design you want.
If you are considering lip filler, rather than deciding how many cc to inject first, please consider which elements of your lips need to be enhanced and which product is most suitable for addressing them.




*This post was written directly by Pixellab Plastic Surgery Clinic in compliance with Article 56, Paragraph 1 of the Medical Service Act, for the purpose of providing medical information and promotion. All treatments and surgeries carry the possibility of side effects depending on the individual, so we recommend making a decision only after thorough consultation with qualified medical professionals.
