Since the nasal tip is an end artery, do not exceed 0.05 to 0.1 mL. For the glabella, guard both the depth and volume. Understand the clinical limits and the flow of touch-up treatments.
๐ Uncovering Nose Filler Side Effects ยท Series Index
1. Recognizing the Warning Signs
2. Vascular Emergency
3. Making a Safe Treatment Decision
3.1 Volume and Placement Guard (Current Article)
One of the most common requests we hear from our visitors is, "Since I'm already getting it done, please add more." While that might make sense for other areas, the nose is a completely different story. The tip of the nose and the glabella (between the brows) have a strict 'threshold limit' for volume, and exceeding this is the number one trigger for complications. Even if the shape isn't fully completed in one session, that is perfectly fine โ waiting 2 to 3 weeks for a touch-up is the safest approach.
Key Summary: The tip of the nose is supplied by an end artery, so injecting more than 0.05 to 0.1 mL at one time causes compression, which can lead to necrosis. The glabella area carries a risk of blindness due to backflow from the supratrochlear artery to the ophthalmic artery. Attempting to complete the look all at once is the primary cause of side effects. A multi-step touch-up approach is the safest and most reliable method.
"Give me more since I'm here" is the most common mistake
During nose filler consultations, the most frequent thing we hear is, "Since I only have to go through the pain and downtime once, please complete the shape all at once." We completely understand how you feel. However, unlike other areas, trying to achieve the final shape of the nose in a single session immediately pushes you into the 'high-risk zone' for complications.
This is due to the unique anatomy of the blood vessels in the nose. As we explored in Part 2 of this series, the nasal tip is supplied by an end artery with no collateral circulation, while the glabella connects directly to the ophthalmic artery. If too much volume is injected, the pressure on these blood vessels quickly exceeds safe limits.
Clinical Guidelines: In actual clinical practice, we highly recommend shaping only up to 80% in the first session, and then finishing the look with a touch-up 2 to 3 weeks later. Aiming for '100% from the start' is risky, whereas '80% first, then a touch-up' is safe. Understanding this process beforehand makes your decision-making much easier and stress-free.

Nasal Tip โ Never exceed 0.05 to 0.1 mL in one session
The tip of the nose is the 'endpoint' of the nasal blood vessels. It is supplied by an end artery*, meaning if it gets blocked, there are no alternative pathways for blood to flow. Even an extra 0.1 mL can cause blood flow to stop simply due to external pressure.
Condition | Safe Volume | Approach |
|---|---|---|
Initial Treatment (Nasal Tip) | Within 0.05 to 0.1 mL | Small, gradual injections |
Touch-up (2โ3 weeks later) | Within 0.05 mL | After checking pressure limits |
Cumulative in one spot (3 months) | Within 0.2 mL | Use a new spot if exceeding this |
The desire of both the injector and the client to add 'just a little bit more to raise the tip further' is where danger lies. Staying strictly within the clinically recommended limits is the only safe way forward.
* End Artery: An artery that does not connect with neighboring blood vessels and lacks collateral circulation. If blocked, the entire area supplied by this artery is cut off from oxygen with no detour routes. The nasal tip, fingertips, and retina are prime examples. In the nasal tip, even a microscopic amount can cause a blockage due to external pressure.

Glabella โ Guarding both depth and volume
The glabella (between the brows) is directly connected from the supratrochlear artery to the ophthalmic artery. If blockage occurs here, it can block the retinal artery, posing a risk of blindness. For this reason, we must be extremely cautious with both depth and volume in the glabella.
- Depth: Avoid the superficial layer where the arteries run, and inject right above the periosteum* (the deepest layer). Using a cannula is highly recommended.
* Periosteum: The thin membrane covering the bone. In areas like the nose and glabella, arteries are located in the superficial and middle layers, making the area just above the bone (above the periosteum) the safest depth for injection because there are almost no arteries there. Injecting right above the periosteum is the standard safety technique for the glabella and bridge.
Volume: Within 0.2 mL in one session. Divvying it up to 0.1 mL on each side.
Technique: Aspiration is mandatory. Gently pull back on the plunger before injecting to ensure no blood enters the syringe.
In general, for the glabella, it is much safer to set a modest goalโsuch as softening fine linesโrather than trying to completely erase deep, stubborn frown lines.

Nasal Bridge โ Distributing to the sides rather than the centerline
The dorsal nasal artery runs right down the centerline of the bridge. Injecting directly down the middle is the highest-risk method for arterial blockage.
Risky Technique: Injecting in a straight line right down the middle of the bridge โ high risk of direct arterial occlusion.
Safe Technique: Distributing the filler along both sides while avoiding the absolute center. Using a cannula to inject gradually in one direction.
While dispersing the filler makes shaping the bridge a bit more challenging, it makes a world of difference in safety. If your doctor explains that they will be placing the filler along the sides of the bridge, it is a very positive sign that you are in safe hands.

Touch-ups are the golden standard โ Leaving a 2 to 3-week gap
When it comes to nose fillers, dividing the treatment into two sessions is the best approach for both safety and beautiful results.
1st Session: Achieving 70โ80% of the desired shape. This establishes the main volume and outline.
Touch-up (2โ3 weeks later): A fine, 30% adjustment. We refine the look once the initial swelling has settled, allowing us to see the true shape.
Why this approach works beautifully:
Lower Risk of Complications โ โ The volume injected into a single area at one time is cut in half.
Higher Precision โ โ Refining the shape after the swelling has subsided ensures a much more detailed and natural result.
Adjustable โ If you wish to make slight adjustments to the first session's shape, we can easily change direction during the touch-up.
While a 'one-and-done' approach might seem convenient, nearly 90% of nasal complications stem from trying to do too much at once. Taking it step-by-step is always the wisest choice.
Frequently Asked Questions
Q. Is the touch-up session painful?
It is far less painful than the first session! Because the volume is very small and we are finely adding to an already settled area, there is very little irritation. It can be easily managed with numbing cream, and downtime is minimal, usually just 1 to 2 days.
Q. My nose tip is flat, and I want to make it sharper. Is that possible?
Within safe limits, yes, but trying to push those limits increases risk. Injecting more than 0.2 mL to raise the tip by an extra 1 to 2 mm is how most complications begin. Keeping your expectations modest and using a gradual, step-by-step touch-up approach ensures both a safe and naturally beautiful result.
Q. If I don't finish it in one session, do I have to pay twice?
While it varies by clinic, many clinics typically bundle the '1st session + 2-3 week touch-up' into a single package price. This way, you get both safety and precision for the same cost. Be sure to ask about this during your consultation!
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