Affected by social media, lip aesthetics is now receiving more and more attention, and people have more and more ideas about lip shape.
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Compared with the traditional concept of pursuing thick lips, people now pay more attention to lip contours, such as M-shaped and heart-shaped lips, which have a three-dimensional sense and can be coordinated with other facial features.
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A pair of beautiful lips can not only add icing on the cake to the facial features, but also enhance the temperament and affinity of the whole person.
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M-shaped lips are generally considered to be one of the most attractive mouth shapes and one of the most popular lip shapes at present. People who are not satisfied with their lips can achieve M-shaped lips through injection.
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This article will comprehensively analyze the standards for good-looking lips and the methods of creating M-shaped lips, helping you understand the injection process and maintenance methods of M-shaped lips.
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What kind of lip shape is considered "good-looking"?
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There is no unified standard for aesthetics, but people generally agree on some aesthetic lip characteristics:
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1. Proportional coordination
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In the ideal lip shape, the lower lip is slightly thicker than the upper lip, and the common ratio is 1:1.6, which conforms to the principle of "golden ratio". This ratio can bring a sense of visual balance.
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2. Full lip bead
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The bead is the raised part in the middle of the upper lip. A moderately full lip bead can enhance the three-dimensional sense of the lips and present a natural "pouty lip" effect.
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3. Clear lip peak
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The clear lip peak with Cupid's bow is an important sign to distinguish ordinary lip shape from high-end lip shape. The clear lip peak makes the lips look delicate and youthful.
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4. Clear lip line
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A clean and neat lip line can make the lips look well-defined even without makeup, avoiding "blurred lips" or blurred lip shape.
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5. Slightly upturned lip corners
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The natural upturned lip corners not only give people a feeling of smiling, but also weaken the fierce appearance, improve fatigue, and make people look more gentle and approachable.
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Common lip shapes include:
Cherry lips: small and full, round and cute;
Heart-shaped lips: upper and lower lips are heart-shaped, with a strong sense of symmetry;
M-shaped lips: obvious lip peaks, upper lip is "M" shaped;
Natural thin lips: more suitable for a cool temperament;
Thick lips: sexy and charming, suitable for a sexy style.
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2. What are M-shaped lips like?

M-shaped lips, as the name suggests, refer to the lip shape with an inverted "M" shape on the upper lip.
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Its notable features include:
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- Clear lip peaks: clear outline of the Cupid's bow, symmetrical on both sides;Â Slightly concave in the middle of the lip, slightly convex on both sides: presenting an "M" shaped curve;
- Full and round lip beads: enhance the three-dimensional sense;
- Clean and tight lip line: enhance overall refinement;
- Full lower lip: coordinated with the upper lip, more sexy and natural.
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M-shaped lips give people a sense of coldness, restraint but high-end atmosphere visually, which is very suitable for modern women who pursue a refined and natural style.
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3. How to achieve M-shaped lips through filling?
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The creation of M-shaped lips is not natural. Many people with poor lip shape can finely carve them through methods such as injecting hyaluronic acid to create a beautiful M-shaped lip contour.
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1. Shaping principle
Lip filling is not simply "thickening", but emphasizing structure, proportion and dynamics. The key points of creating M-shaped lips are:
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- Increasing the height of the Cupid's bow;
- Shaping the volume of the lip bead;
- Adjusting the proportion of the upper and lower lips;
- Emphasizing the clarity of the lip line;
- Avoiding "sausage lips" or "stiff lips".
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2. Injection technical steps
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The doctor will make a personalized design based on the facial proportions and lip conditions. The general injection process is as follows:
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Preoperative design and photo analysis: determine the original lip shape, lip bead position, lip peak angle, etc.;
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Local anesthesia: use topical anesthetic cream or local injection anesthesia to reduce discomfort;
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Layered injection:Â Use a sharp needle to finely adjust the lip bead and lip peak;
Use a needle to evenly fill the main body of the lip to reduce the risk of bruising and induration;
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Partition shaping: The lips are usually divided into the upper middle section, the lip edges on both sides, the lip bead and the lip corner, and the dosage is accurately controlled;
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Dynamic adjustment: adjust the contour in time according to dynamic effects such as smiling and talking.
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3. Hyaluronic acid selection
Hyaluronic acid used for lips needs to be soft and have strong shaping power. Commonly used products:
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- Small molecule hyaluronic acid: such as Diaminy, Restylane Kysse, soft and natural;
- Medium molecule hyaluronic acid: such as Diaminy, Juvederm Volift, long-lasting and stronger three-dimensional effect;
- Cross-linked hyaluronic acid: suitable for those with high shaping precision requirements, the maintenance time is usually 6-12 months.
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Doctors will recommend a suitable product combination based on the thickness of the lips and the desired effect of the patient.
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4. Why are M-shaped lips so popular?
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The popularity of M-shaped lips is mainly based on the following aesthetic and psychological factors:
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1. High-end and artistic
The lines of M-shaped lips are more undulating, which is different from thick lips or ordinary thin lips. Its shape is more sculptural and delicate.
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2. Sexy but not vulgar
Compared with the straightforward sexiness of traditional thick lips, M-shaped lips are more inclined to calm and restrained sexiness, which is more in line with the aesthetic orientation of Asian women.
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3. Look young and energetic
People with less three-dimensional lips often look tired and dull. Properly shaped M-shaped lips can enhance the contrast of facial features and make people look more energetic.
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4. Modify lip defects
For cases with congenital flat lips, unclear lip beads, blurred lip peaks or drooping lip corners, M-shaped lip filling can effectively improve, and the process is minimally invasive and has a fast recovery.
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5. Celebrities drive aesthetic trends
Actresses such as Jennie have obvious M lips, which further drives the public's imitation craze.
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5. How to care after injection?
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Although lip injection is not a surgery, due to the rich blood vessels and frequent activities, postoperative care is very critical and directly related to the final effect.
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1. 0-3 days after surgery
Ice compress to reduce swelling: 10 minutes each time, 2-3 times a day;
Avoid large-scale mouth activities: such as laughing, chewing hard objects, etc.;
Avoid kissing and hot compresses: avoid hyaluronic acid migration;
Do not drink alcohol or eat spicy and irritating foods.
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2. 4-7 days after surgery
Appropriate cleaning and moisturizing: use non-irritating lip balm;
Avoid high temperature environment: such as sauna, hot spring;
Continue to avoid pressing: do not touch the injection area with your hands.
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3. One week after surgery
Resume normal diet and activities;
Take photos regularly to observe changes;
Revisit for additional injections or adjustments after 2 weeks
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Possible side effects and risks

Although lip filling is a mature micro-plastic surgery, there are still some potential side effects and risks:
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1. Bruising and swelling
Mild swelling is a normal reaction and subsides in about 2-5 days; bruises usually recover within a week.
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2. Asymmetric lip shape
It may be caused by injection technique, personal facial asymmetry or postoperative habits. Some cases require secondary adjustment.
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3. Hyaluronic acid nodules or lumps
Excessive or incorrect injection level may cause nodules. Mild cases can be softened by massage, and severe cases can be treated with lytic enzymes.
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4. Migration or extravasation
The lips are active frequently. If the filler is not selected properly or the injection is uneven, the material may leak around the lips.
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5. Infection or inflammation
In rare cases, if the injection environment is unclean or the doctor's instructions are not followed after the operation, there may be a risk of infection.
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6. Vascular blockage (very rare)
If the blood vessels are mistakenly entered, serious complications such as local tissue necrosis may occur. It is crucial to choose an experienced and regular doctor.
Conclusion
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M-shaped lips have become one of the important symbols of modern aesthetics. It is natural and three-dimensional, sexy and cool, suitable for most Asian female faces, and is one of the most popular choices for lip filling.
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After all, true beauty is not just a change in form, but also an external expression of confidence and temperament.
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Diaminy offers a variety of consumables for medical beauty, including various cannulas and needles for injections, face threads for face lifting, and fillers for lip and cheek injections.
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These products are CE and FDA certified and have excellent product quality. Click the link to learn more about the products!