"Can I apply lotion here too?" It is one of the most common questions returned when the topic of the vulva comes up in the clinic. To that extent, we feel awkward about looking at or touching this part of our body in detail. Many also feel as if they should not know it too closely. But knowing your body accurately is not something to be ashamed of; it is the most basic starting point for protecting your health. Today we will look together at the normal anatomy of the vulva and the normal diversity that differs from person to person.
What does the vulva refer to
It is commonly lumped together with the single word "vagina," but the precise name for the entire externally visible part is the vulva. The vagina is the term separately used for the passage that continues inward from there. The American College of Obstetricians and Gynecologists (ACOG) also explains the vulva and vagina distinctly.
The vulva broadly includes the labia majora, labia minora, vaginal vestibule, and urethral opening. The plump, two-layered skin with hair on the outside is the labia majora, and the wing-shaped thin folds that wrap the vaginal opening and urethra from both sides inside it are the labia minora. The smooth inner space embraced by the labia minora is called the vaginal vestibule, and within it lie the urethral opening, from which urine comes out, and the vaginal opening.
The vulva is not the same word as the "vagina." It is the name referring to the entire structure visible from the outside, and just knowing the location and role of each part reduces vague anxiety.
The shape and size of the labia minora, how far is normal
The most common concern received about the vulva in the clinic is precisely the labia minora. Questions like "one side is bigger, is that abnormal?" and "the color is dark and it bothers me" are endless. To put the conclusion first, the labia minora vary greatly in size, shape, thickness, and color from person to person, and most of that falls within the normal range.
ACOG explains that there is no single "correct appearance" the vulva should look like, and that individual variation is very large. Cases of dark color and light color, of long length and short length, are all regarded as common normal variations. Slight left-right asymmetry is also not a rare thing.
Actual measurement studies also support this. In a vulvar measurement study published by Lloyd et al. in 2005, the length and width of the labia minora of women without discomfort symptoms were distributed across a considerably wide range, and even in cases that were protruding or asymmetric, most had no symptoms at all. The length range of 2–10 cm and width of 0.7–5 cm guided in our director's original article are also directly connected to the measurements of this study.
| Item | Commonly observed normal range (when no discomfort) |
|---|---|
| Labia minora length | Large individual variation, between about 2–10 cm |
| Labia minora width | Varied, between about 0.7–5 cm |
| Left-right symmetry | Slight asymmetry is a common normal variation |
| Color / thickness | Dark or light, thick or thin, mostly normal |
You do not need to be too bound by the numbers. The key is not "abnormal if it deviates from the average," but that the wide range itself is normal.
Ask comfortably whether my vulva is normalThe shape changes over time
The appearance of the vulva is not fixed for life. According to ACOG, as you pass through puberty, pregnancy, childbirth, aging, and menopause, the size, shape, and color of the vulva naturally change. The color darkening or the labia minora becoming prominent at puberty, and the elasticity and thickness changing around menopause, are all natural processes of our body responding to hormonal changes.
So the very feeling that "it seems to have changed from before" does not in itself mean a problem. Examining the speed of change and accompanying symptoms together is more important. If you are bothered by changes after childbirth, you can look further at the guide to vulvar and perineal changes after birth, and for vulvar concerns around menopause, at examining concerns related to vulvar aging.
Itching and skin changes, why do they occur
The vulvar skin is a part of the body closest to the most sensitive mucosa. If it is too moist or, conversely, too dry, itching easily arises, and if you scratch absentmindedly, lichenification, in which the skin gradually thickens, can progress. What our director expressed in the original article as "the vulva sometimes changing into skin as thick as an elbow" is precisely this lichenification phenomenon.
The vulvar skin care guide of a UK NHS medical institution also explains that when the stimulation of scratching or rubbing is repeated, lichenification, in which the skin thickens and the texture becomes rough, can appear. In clinical experience, the "habit of scratching" rather than the itching itself is often the greater cause of skin damage.
- Cleanse gently with lukewarm water, and avoid hot water
- Rather than drying with hot air, gently press to remove moisture
- Too-frequent cleansing or strong cleansers rather weaken the skin barrier
- Even if itchy, rather than scratching, if symptoms persist, confirm the cause through care
An article dealing in more detail with the moisturizing and cleansing of vulvar skin is guided separately, and here we focus on "understanding your body." If chronic itching continues, please also refer to examining vulvar itching.
When is care needed
That normal diversity is wide does not mean "don't mind any change." Rather than the shape or size itself, whether discomfort, irritation, or a functional problem accompanies it becomes the criterion for the care decision.
Treatment is not necessary just because the shape differs from others. However, if there is pain, persistent itching, sudden color or skin change, or discomfort in daily life or hygiene management, it is good to confirm the cause through care.
According to UK NHS medical institution guidance, vulvar itching, pain, and skin change are common symptoms, but they can sometimes be associated with a skin disease or another systemic health problem, so evaluation is recommended. If a change in discharge or bleeding is accompanied, refer to the content of checking abnormal vaginal discharge or examining abnormal vaginal bleeding, and if symptoms persist, we recommend consulting without putting it off. Because there may be individual variation, an accurate judgment is made through examination.
It starts with knowing your body
Looking closely at the vulva is not a shameful curiosity but the first step in taking care of your own health. Knowing the shape, color, and skin texture of your own vulva in advance lets you notice even small changes quickly. Please just remember that a difference in shape is mostly normal, and the signs that really need to be examined are "discomfort and change."
If you have curiosity about your body or a symptom that bothers you, rather than searching alone and feeling anxious, please use comfortably consulting about vulvar concerns non-face-to-face. You can start together from a light question.
Author: Lee Dong-hee Chief Director · Obstetrician-Gynecologist · View staff profile
First published March 5, 2026 · Last reviewed May 30, 2026
References: American College of Obstetricians and Gynecologists, Vulvovaginal Health (2024), Lloyd et al., Female genital appearance normality in women (2005), NHS Cambridge University Hospitals, Care of the Vulval Skin (2023)
This article is intended to provide general health information and does not replace individual diagnosis or treatment. If you have symptoms, please consult through a medical examination.