With the increasing advancement of medical cosmetic technology, lip filling has become a popular choice for modern women in pursuit of beauty. Whether it is due to natural reasons, thin lips, or due to age, lips are no longer plump, you can improve the shape of the lips by injecting fillers such as hyaluronic acid fillers, presenting a plump and youthful shape.
However, lip filler injection is not without risks. Choosing the wrong injection site or improper practitioner's technique will bring minor or serious side effects, and may even affect the effect of lip augmentation.
So in addition to finding a practitioner you trust, we can understand the injection technique of lip augmentation ourselves, understand where to inject, and where is the forbidden area for injection.
So these are some areas where not to inject lip filler.
1. The small blood vessel area around the lips
Other parts of the face can be treated with blunt cannulas to reduce bruising and bleeding, but for lip filling injections, practitioners generally use sharp needles to complete it.
Sharp needles will inevitably puncture blood vessels, causing bleeding and postoperative bruising, etc. It is necessary to pay attention to which parts cannot be injected during injection.
The lips are one of the most sensitive areas of the face, and the blood vessels are densely distributed.
Two areas are particularly noteworthy, namely the center of the upper lip and the corners of the lower lip. The blood vessels in these areas are relatively shallow and very easy to be accidentally injured.
These blood vessels are located in shallow positions. When injecting, you should be extra careful to prevent the filler from being injected into the blood vessels, which will cause poor blood flow or even blood clots, and then cause serious complications such as skin necrosis or congestion.
Therefore, for the sake of safety, novice injection physicians should avoid injecting directly into these blood vessel-dense areas.
Therefore, when performing lip filling, practitioners need to be very careful and accurately control the injection dose to ensure that the surrounding blood vessels are not injured.
2. Over-injection of the edges of the upper and lower lips

Many people hope to make their lips look fuller by injecting lip fillers. But don't pursue excessive filling. For example, over-injection of the edges of the upper or lower lips may cause the lips to become unnatural or even exaggerated, with a lip eversion effect.
Different doses of lip fillers have different injection methods. 0.5ml of hyaluronic acid filler can be filled along the lip edge and around the lips.
If it is 0.7ml of hyaluronic acid filler, in addition to filling along the lip line, the remaining dose can also be injected into the middle of the upper lip. If it is 1ml, it is injected into the middle of the lower lip on the basis of 0.7ml.
If too much is injected in the same position, it may cause the swelling lips on the edge of the lip, giving people the feeling of "obvious injection marks". Too much injection is prone to swelling of the lips, which is extremely unsightly.
In addition, if the injection is excessive, the lips will become stiff when smiling, and even the mouth cannot be completely closed.
To avoid this situation, the injection amount and the choice of injection site need to be strictly controlled to avoid excessive injection.
3. Injection into the corners of the lips
The corners of the lips and the corners of the mouth are another sensitive area of the lips. When injecting hyaluronic acid fillers, practitioners should try to avoid injecting fillers into this area.
As the lip corners are more active and often pulled, injection into this area will cause the filler to migrate, which will affect the overall injection effect and cause unnatural lip augmentation.
Especially when injecting into the corners of the mouth, if the filler is injected unevenly, it may cause an asymmetrical smile and affect the beauty.
In addition, injection into the corners of the lips may also affect the normal movement of the mouth and even cause difficulties in speech and eating.
Therefore, practitioners should consider the impact of fillers on facial dynamics and avoid injecting them into these locations.
4. Avoid inharmonious injection of upper and lower lips

Excessive injection or uneven distribution of fillers may cause asymmetry between the upper and lower lips and affect the natural proportion of the lips.
In particular, too much injection of the upper lip can easily make the lips appear too thick or form a "duckbill" effect, losing the natural curvature and lines.
Too much injection of the lower lip may cause the lower lip to appear too prominent or stiff, affecting the normal movement and expression of the mouth.
Therefore, the dosage and injection location need to be precisely controlled during injection to ensure that the proportion of the upper and lower lips is harmonious and meets the individual's facial structure and aesthetic needs.
5. Avoid injecting into the blood vessels of the lips
Wrong injection into the blood vessels can cause some serious side effects, so it should be treated with caution.
When injecting the lips, the wrong injection of fillers into the blood vessels may cause vascular occlusion, which will cut off the oxygen and blood supply.
So when the injecting physician encounters the patient's skin turning pale or severe pain during the injection, he should pay attention and make adjustments in time. If he does not make timely adjustments, it will cause necrosis of the lip tissue.
6. The importance of postoperative care to the effect
If you want to have a perfect lip, in addition to professional lip injections, you should also pay attention to aftercare. Good lip care can reduce swelling and bruising at the injection site, as well as postoperative infection.
For example, you should not engage in intense exercise in the short term after surgery, and avoid pressure or friction on the injection site to prevent the filler from shifting or forming lumps.
In addition, avoid excessive heat or cold compresses after surgery to avoid irritating the blood vessels of the lips.
Follow the practitioner's care advice, keep the injection site clean, avoid exposure to the sun, and avoid taking blood-thinning drugs to avoid worsening bruises.
7. Summary: Choose an experienced doctor to ensure safe results

In general, lip filling is a cosmetic treatment that requires delicate operation. Choosing the right injection site and properly controlling the injection volume is the key to ensuring the final natural and beautiful effect.
Avoiding injections in the above areas, combined with proper postoperative care, will effectively reduce the occurrence of adverse reactions and improve postoperative results.
When choosing to perform lip filling, the most important thing is to choose an experienced and skilled doctor.
Instead of pursuing excessive fullness and unnatural effects, it is better to choose a natural and harmonious lip contour, which will make you more confident and natural without losing beauty.
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