Philtrum length: a tiny difference that changes your facial impression

Philtrum length refers to the **vertical distance (Sn–Ls) from the subnasale**, the point below the nose, **to the labrale superius**, the red border of the upper lip. While approximately 11 to 18 mm for adult women and 13 to 22 mm for men are the ranges referenced in clinical practice, racial and individual variations are so significant that the ratio to the overall face is far more important than the absolute number.

If you have looked in the mirror and wondered, "Is my philtrum long?" there is actually something you need to look at before measuring millimeters. Namely, whether the ratio of the philtrum to the lower lip + chin is close to approximately 1:2, and whether the center of gravity of the face appears gathered upward or sagging downward. This balance creates the impression of an impression.

📏 Where exactly is the philtrum length measured from and to?

There are two reference points when measuring the philtrum. The upper point is the subnasale (Sn), where the nose and upper lip meet, and the lower point is the labrale superius (Ls), which is the center of the red line of the upper lip. The vertical distance connecting these two is the philtrum length.

Organizing each part of the face in this way using points and numerical values is called **facial anthropometry**. It is, in a sense, the basic language used when objectively discussing impressions in the field of plastic surgery and aesthetics.

The M-shaped curve formed by the red border of the upper lip is called Cupid's Bow, and the exact center of this bow becomes the lower reference of the philtrum. On the surface of the philtrum, there are two vertically rising philtral columns and a concave philtral dimple between them, and this three-dimensional effect affects the impression independently of the length.

📌 Key Summary: Philtrum length is the vertical distance from the subnasale (Sn) to the labrale superius (Ls), and the facial ratio is key rather than the absolute value.

📊 What is the average philtrum length, and how much is considered long?

The ranges referenced in clinical practice are approximately 11 to 18 mm for adult women and approximately 13 to 22 mm for adult men. However, this is merely a reference line, and the length that suits you is determined within the overall facial ratio.

There is an interesting piece of data. As a result of measuring 76 domestic patients who visited the clinic saying their face looked long, the average philtrum length was 25.7 mm, which was significantly longer than what is generally considered ideal. This is a case showing numerically that a longer philtrum scatters the facial features downward and makes the middle of the face look elongated.

Conversely, if the philtrum is short, the facial features gather upward, giving a younger look. However, if it is excessively short, it can lead to a gummy smile where the gums are overly exposed when laughing, so the key is ultimately harmony of ratio, not whether it is short or long.

📌 Key Summary: 11 to 18 mm for women and 13 to 22 mm for men are the reference ranges, but the ideal length is determined within the overall facial ratio.

⏳ Why does a long philtrum make you look older?

The philtrum lengthens slightly as we age. The cause lies within the skin. As collagen and elastin decrease, the skin sags, the philtrum length increases, and at the same time, the red part of the upper lip (vermilion) thins. Naturally, the upper teeth become less visible, and the mouth area takes on a heavy and blurry feel.

This downward shift of the face's center of gravity is one of the key causes of an aging facial impression. A young face looks sharp with features gathered toward the top, but the reverse happens when the philtrum lengthens and the upper lip rolls inward.

Aside from facial aging, the philtrum can also appear longer for other reasons. If the maxilla moves backward due to protruding mouth correction (orthodontics or two-jaw surgery), the upper lip may roll inward, making the philtrum look longer. Rarely, congenitally flat philtrums occur, as in fetal alcohol syndrome, so the philtrum is also used as a developmental indicator.

📌 Key Summary: When collagen decreases due to aging, the philtrum lengthens, the upper lip thins, and the face's center of gravity shifts downward, making you look older.

💧 Can massage or exercise shorten the philtrum?

To start with the conclusion, claims that massage or exercise can permanently reduce philtrum length have no basis in fact. While temporary reduction in swelling may make it look different, it does not shorten the length of the skin itself (Sn–Ls).

Lip fillers and Lip Flip Botox are frequently mentioned non-surgical methods. Fillers add volume to the lips, and lip flips relax the upper lip muscles to make the lips look slightly rolled up. However, it is good to know precisely that both methods are visual illusion effects of making it look shorter rather than actually shortening the philtrum length.

Overlip makeup is also a non-invasive way to expand the lip border upward to make the philtrum look shorter, and approaches like thread lifting are sometimes used adjunctively to improve skin elasticity.

📌 Key Summary: There is no basis for permanent reduction effects from massage or exercise, and fillers, Botox, and makeup improve illusion, not physical length.

🔪 What is a philtrum reduction (lip lift)?

The method of physically reducing the actual philtrum skin length is a lip lift (philtrum reduction). This involves excising skin under the nose and pulling up the upper lip, with the most widely used incision design being the bullhorn incision, which resembles a bull's horns.

While it has the distinct advantage of reducing actual length, there are also points to consider as it is an incisional surgery. It carries risks such as scars under the nose, asymmetry, pulling or shape changes of the nostrils, and increased gum exposure upon overcorrection, and the recovery period and difficulty of revision surgery must also be considered.

For reference, there is a view that the non-incisional philtrum reduction method, which manipulates only muscles via the inside of the mouth or nose, has almost no length-shortening effect, unlike incisional surgery where skin is actually removed. It is wise to take expressions like "drastically shortens the philtrum scar-free and without incision" with caution.

📌 Key Summary: A lip lift excises skin under the nose to reduce actual length, but it carries the burdens of incisional surgery, such as scars and asymmetry.

🌿 How does Onlif Clinic view the philtrum?

Onlif Clinic (ONLIF) is a clinic focused on dermatology and aesthetic skin procedures located in Gangnam. Rather than plastic surgery that alters the shape of the eyes, nose, and mouth, it aims to clear away skin concerns such as aging and loss of elasticity that obscure inherent beauty. "Because you are precious, we do not change you."

Therefore, the way Onlif treats the philtrum is also a non-surgical philtrum reduction lifting rather than incision. Onlif's signature DYNA 3X Philtrum Reduction Lifting focuses on correcting a sagging philtrum to pull the blurry center of gravity of the face back up.

The method is a three-step complex solution. It combines philtrum Botox precisely placed on the orbicularis oris and depressor septi nasi muscles and 2-channel radiofrequency (RF) energy that remodels dermal collagen to restore elasticity to the philtrum skin. The biggest difference from incisional surgery is that the procedure takes about 10 minutes and allows a return to daily life on the same day without scarring.

The effects of the philtrum Botox begin to appear within 3 to 7 days, and the lifting sensation gradually settles over several weeks. The maintenance period varies by individual but is usually about 3 to 6 months, managed through regular treatments.

Onlif operates an uniquely specialized doctor system. Under the premise that one person cannot do everything well, we divide and assign the procedures that each doctor performs best by field. For areas like the philtrum, where the overall facial ratio and muscle movement must be read together, a 1:1 customized design makes the difference in results.

📌 Key Summary: Onlif refines the impression without scarring using non-surgical philtrum reduction lifting that combines Botox and 2-channel high frequency instead of incision.

🙋 If you have these concerns, you might want to consider philtrum lifting

• You often hear that you look older than your actual age

• You feel your philtrum has become longer than before

• Your upper lip is getting thinner and rolling inward

• Surgical scars and long recovery periods are burdensome

• You want to look naturally younger rather than changing shape

However, if philtrum asymmetry has appeared suddenly, the story is a bit different. It can be intertwined with jaw joint or facial muscle habits, so for sudden changes, checking the condition before the procedure is the proper order.

📌 Key Summary: If you are concerned about an aging impression or a sagging philtrum but want to avoid the burden of incision, non-surgical philtrum lifting is an option.

❓ Frequently Asked Questions (FAQ)

Where is the philtrum length measured from and to?

It is measured as the vertical distance (Sn–Ls) from the subnasale under the nose to the labrale superius, the red border of the upper lip. Using these two points as standards is the standard method of facial anthropometry.

What is the average philtrum length for adult women and men?

The clinical reference range is approximately 11 to 18 mm for adult women and approximately 13 to 22 mm for adult men. Since racial and individual differences are large, it is more accurate to judge by the overall facial ratio rather than absolute values.

Does reducing the philtrum with filler shorten the actual length?

No. Upper lip fillers and lip flip Botox only make the lips volumetric or look slightly turned up to make the philtrum "look" shorter; they do not shorten the actual skin length (Sn–Ls).

Why does a long philtrum make you look older?

When collagen and elastin decrease due to aging, the skin sags, causing the philtrum to lengthen and the upper lip to thin. As a result, the face's center of gravity shifts downward, giving a blurry and heavy impression.

Can massage or exercise shorten the philtrum?

Claims of permanent reduction have no basis. It may look temporarily different, but skin length itself is not shortened.

Do non-incisional philtrum lifting and incisional surgery have the same effect?

They are different. Incisional surgery actually removes skin to shorten length, but there are scar and recovery burdens. Non-surgical philtrum lifting aims to restore elasticity and refine the impression with Botox and high frequency, allowing same-day return without scarring. An accurate judgment requires a consultation looking at the facial proportions together.