Ingrown pubic hairs happen when a hair either curls back into the skin after growing out or gets trapped beneath the surface before it ever exits the follicle. The pubic area is especially prone to this because the hair there is typically coarse and curly, and the skin is frequently subjected to shaving, waxing, and friction from clothing. Understanding the specific causes can help you avoid them.
How Hairs Get Trapped
There are two distinct ways a hair becomes ingrown. In the first, the hair grows normally out of the follicle but then curves back downward and pierces the skin’s surface, re-entering like a hook. In the second, the hair never makes it out at all. It grows sideways or curls inside the follicle beneath the skin. Either way, your body treats the embedded hair as a foreign object, triggering an inflammatory response. That’s what produces the telltale red, swollen bump that can look like a pimple or feel like a hard lump under the skin.
Why Curly or Coarse Hair Is More Vulnerable
The shape of your hair follicle largely determines how your hair grows. Curved follicles produce tightly curled hair, and that natural curl gives the hair a built-in tendency to loop back toward the skin once it’s been cut. Shaving makes this worse because it creates a sharp, angled tip on the hair shaft, essentially turning it into a tiny spear that can puncture surrounding skin more easily as it grows.
People with thick, coarse, or curly hair are significantly more likely to develop ingrown hairs for this reason. The pubic region combines all the worst conditions: the hair is among the coarsest on the body, the follicles produce tightly curled strands, and the area is routinely shaved or waxed. People with skin of color are also at higher risk, as curly hair texture is more common in certain ethnic backgrounds.
Shaving and Waxing
Hair removal is the single biggest external trigger for ingrown pubic hairs. Shaving cuts the hair at a sharp angle just below or at the skin surface. As the hair regrows, that sharp edge easily catches on surrounding tissue and burrows inward instead of growing straight out. Shaving “too close,” where the blade pulls the hair slightly below the surface before cutting it, increases the risk further because the hair starts its regrowth journey already underneath the skin.
Waxing works differently but still contributes. Pulling hair out from the root can damage the follicle or change the angle at which the hair regrows. People who get bikini waxes are specifically noted as being prone to ingrown hairs in the groin area. Even tweezing carries risk, since a broken hair (one that snaps off below the surface rather than being fully extracted) can regrow at an odd angle and become trapped.
Dead Skin and Blocked Follicles
Your skin constantly sheds dead cells, and in the pubic area, those cells can accumulate over the follicle opening and form a physical barrier. When dead skin cells mix with keratin (a structural protein your body produces naturally) or sebum (the oil your skin makes to stay moisturized), they can form a plug that seals off the pore. A hair growing underneath that plug has nowhere to go, so it curls sideways or loops back on itself beneath the surface.
This is why exfoliation helps prevent ingrown hairs. Without regular removal of that dead cell layer, even hair that would otherwise grow straight out gets trapped. Sweat, humidity, and oils from lotions or body products can make the problem worse by contributing to the buildup that clogs follicles.
Tight Clothing and Friction
Clothing that fits tightly against the pubic area creates constant low-level friction that pushes newly emerging hairs back against the skin. Underwear with narrow elastic bands, skinny jeans, leggings, and synthetic fabrics that trap heat and moisture all increase the likelihood of ingrown hairs. The friction itself can also irritate hair follicles, making the surrounding skin more inflamed and swollen, which further narrows the opening a hair needs to grow through.
Heat and sweat compound the problem. Fabrics that don’t breathe create a warm, moist environment where dead skin cells and sebum accumulate faster, follicles swell slightly, and bacteria thrive. This combination doesn’t just cause ingrown hairs; it makes existing ones more likely to become irritated or infected.
What an Ingrown Pubic Hair Looks and Feels Like
A typical ingrown pubic hair appears as a small raised bump, often with redness and swelling around it. It can be itchy or painful to the touch. Some ingrown hairs develop a visible white or yellowish head filled with pus, making them easy to mistake for acne. Others stay completely under the surface and feel like a firm, pea-sized lump beneath the skin. You may be able to see the curled hair through the skin in some cases, which can help distinguish it from a regular pimple.
When an Ingrown Hair Gets Infected
Most ingrown pubic hairs resolve on their own as the hair eventually works its way to the surface. But sometimes the irritated follicle becomes infected, a condition called folliculitis. Bacteria enter through the compromised skin around the ingrown hair, and what started as a mild bump becomes increasingly red, swollen, warm, and painful.
If the infection deepens or the follicle becomes fully blocked while infected, an abscess or cyst can form. These are larger, more painful lumps filled with pus that may need to be drained by a healthcare provider. A doctor can examine the area and, if infection is suspected, take a swab to identify the bacteria involved and determine whether treatment beyond basic wound care is needed.
Reducing Your Risk
The most effective prevention targets the causes directly. If you shave, use a sharp, single-blade razor and shave in the direction of hair growth rather than against it. Avoid pulling the skin taut while shaving, since this allows hairs to be cut below the skin surface. Rinsing the blade after every stroke helps maintain a clean cut.
Gentle exfoliation of the pubic area a few times a week removes the dead skin cells that block follicle openings. A soft washcloth or a mild exfoliating wash is sufficient. You don’t need anything abrasive.
Wearing breathable, looser-fitting underwear made from cotton or moisture-wicking fabric reduces both friction and the warm, damp conditions that promote follicle blockage. If you’re prone to frequent ingrown hairs despite these steps, reducing the frequency of hair removal or switching to a method like trimming (which leaves hair longer and avoids sharp tips) can make a meaningful difference.