The labia majora are the two outer folds of skin and tissue that surround and protect the other structures of the vulva, which is the external part of the female genitalia. They’re the most visible part of the vulva, running from the front of the pubic area down toward the perineum (the skin between the vaginal opening and the anus). Think of them as a protective outer layer, similar in concept to how your eyelids shield your eyes.
Structure and Tissue
The labia majora are relatively large, fleshy folds made up of fatty tissue, skin, and connective tissue. The outer surface is covered in skin similar to the rest of your body and, after puberty, grows pubic hair. The inner surface is smoother and contains fewer hair follicles.
These folds also contain sweat glands and oil-producing glands (sebaceous glands) that release lubricating secretions to keep the skin from drying out. The fatty tissue inside gives them their cushioned shape and helps absorb impact during physical activities.
What the Labia Majora Do
Their primary job is protection. By enclosing the more delicate structures underneath, including the labia minora, the clitoris, the urethral opening, and the vaginal opening, the labia majora act as a physical barrier against friction, bacteria, and other potential irritants. This protective function helps reduce the risk of infection reaching the internal reproductive organs.
During sexual arousal, the labia majora also play an active role. They can swell to two to three times their resting size due to increased blood flow. In people who haven’t given birth, they tend to become tauter and thinner during arousal. In those who have given birth, the more developed blood vessel networks cause them to swell outward instead.
Normal Variation in Size, Color, and Shape
There is no single “normal” appearance. Labia come in a wide range of shapes, sizes, colors, and textures. Some people have fuller, more prominent labia majora, while others have thinner, flatter ones. Exact symmetry is rare; just as most people have one foot slightly bigger than the other, it’s completely typical for one side to be slightly larger or shaped differently.
Color varies just as much. The labia majora can be brown, pink, reddish, or purplish. They’re sometimes the same shade as the surrounding skin but are often lighter or darker, much like the way your lips differ in color from the rest of your face. All of these variations are normal and not a sign of any health problem.
How They Change Over a Lifetime
The labia majora go through noticeable changes at several stages of life, largely driven by hormones.
During puberty, rising estrogen levels cause the labia to grow larger, thicker, and more prominent. The skin also changes at a cellular level, becoming more resilient. Pubic hair begins to grow on the outer surface.
Pregnancy and childbirth can further increase labial thickness and length. These changes may or may not fully reverse after delivery, and both outcomes are normal.
After menopause, declining estrogen and progesterone levels cause widespread changes to skin tissue throughout the body, and the labia majora are no exception. They typically become smoother, thinner, paler in color, and less distinct in outline. The skin also loses elasticity and hydration, which can make it more fragile and more susceptible to irritation from friction, chemicals, or rough fabrics.
Embryonic Origins
Early in fetal development, the genital structures of all embryos start from the same tissue. The labia majora develop from the same embryonic folds that become the scrotum in male anatomy. This shared origin is why the two structures occupy a similar position on the body and share certain tissue characteristics, even though they serve different functions after birth.
Common Conditions That Affect the Labia Majora
Because the labia majora are covered in regular skin and contain hair follicles and sweat glands, they’re susceptible to many of the same skin issues that affect other parts of the body.
Folliculitis is one of the most common issues. It happens when hair follicles become inflamed or infected, usually from friction, shaving, or trapped sweat. It typically looks like small red or pus-filled bumps and often resolves on its own with gentle hygiene.
Vulvar dermatitis is another frequent problem, causing itching, burning, or a raw feeling on the vulvar skin. It can be triggered by contact with irritants like scented soaps, detergents, or synthetic fabrics. Symptoms can include skin that looks red or darker than the surrounding area, patches that feel thicker than normal, or a wet sensation from fluid seeping through irritated skin. Some forms of dermatitis, like lichen sclerosus and lichen planus, are inflammatory conditions that can cause scarring and permanent changes to the skin’s appearance if left untreated.
Cysts can also develop in the labia majora, particularly when oil glands or sweat glands become blocked. These are usually painless, round lumps beneath the skin. Most are harmless, though they can occasionally become infected and tender.
Caring for the Labia Majora
The skin of the labia majora doesn’t require special products. Warm water is generally sufficient for cleaning, and mild, fragrance-free soap can be used on the outer surface if you prefer. Scented washes, douches, and deodorant sprays can strip away natural oils and disrupt the skin’s balance, increasing the risk of irritation or dermatitis.
Wearing breathable, cotton underwear and avoiding prolonged time in damp clothing (like wet swimsuits) helps reduce the chance of folliculitis and yeast overgrowth. If you shave or wax the area, using clean tools and shaving in the direction of hair growth can minimize irritation and ingrown hairs.