An ingrown hair looks like a small, raised bump with discoloration around it, often with a visible hair at the center. The bump is typically the size of a pimple, and depending on your skin tone, it may appear red, brown, or purple. Sometimes you can see the hair itself curled or looped just beneath the surface of the skin.
The Basic Appearance
At its simplest, an ingrown hair is a flesh-colored or discolored papule, a small solid bump on the skin, with a hair shaft trapped inside. The hair has either curled back into the skin after being cut or shaved, or it has grown sideways beneath the surface instead of pushing straight out. In many cases, you can see the dark line of the hair through the top layer of skin, curving back toward the surface like a tiny loop.
The area around the bump is often slightly swollen, warm to the touch, and tender. It can itch or sting, especially if clothing or friction is irritating it. Some ingrown hairs develop a white or yellowish head, making them look almost identical to a pimple. Others stay as firm, closed bumps without any visible fluid.
How They Look on Different Skin Tones
On lighter skin, ingrown hairs tend to show up as red bumps with a noticeable ring of inflammation. On darker skin, the same bump may look brown or purple rather than red. This difference matters because people with darker skin are also more prone to post-inflammatory hyperpigmentation, a reaction where the skin produces extra melanin at the site of the irritation. Even after the ingrown hair clears up, it can leave behind a flat, dark brown patch that lingers for weeks or months. These marks aren’t true scars, but they can be mistaken for them.
Where They Commonly Appear
Ingrown hairs show up wherever hair is shaved, waxed, or tweezed. The most common areas are the beard and neck (often called razor bumps or pseudofolliculitis barbae), the bikini line, the legs, the underarms, and the pubic area. In the beard area specifically, clusters of small, firm bumps tend to appear right next to the hair follicles. If you gently lift one of these bumps with a sterile needle, you’ll often find the free end of a trapped hair coiled just under the surface.
On the legs, ingrown hairs tend to be more isolated, showing up as single bumps a day or two after shaving. In the bikini and pubic area, they can be larger, more painful, and more likely to develop into deeper, cyst-like lumps because the hair in that region is coarser and curlier.
When They Get Infected
A straightforward ingrown hair is annoying but harmless. It becomes a problem when bacteria get into the irritated follicle. An infected ingrown hair swells noticeably larger, becomes more painful, and may start to drain pus. The surrounding skin gets redder and hotter. In some cases, the bump hardens into a cyst, a firm lump beneath the skin that can keep growing if left alone.
Signs that an ingrown hair has crossed from irritation into infection include severe pain that worsens over a couple of days, visible pus draining from the bump, increasing size, and in rare cases, fever. A cyst that keeps getting larger or more painful needs medical attention, as it may require drainage.
Ingrown Hair vs. Acne vs. Herpes
Because ingrown hairs look so much like pimples, telling them apart can be tricky. The key difference is the visible hair. If you look closely at an ingrown hair, you’ll often see a dark strand at the center of the bump. A regular pimple won’t have that. Folliculitis, an infection of the hair follicle caused by bacteria, looks like a sudden cluster of small pimples, each surrounded by a red ring. It can be hard to distinguish from a patch of ingrown hairs without a close exam.
In the genital area, people often worry about confusing ingrown hairs with herpes. Ingrown hairs tend to be firm, raised bumps that look like pimples, usually with a hair visible at the center. Herpes lesions look more like shallow open sores or scratches on the skin’s surface. Both can start with redness, itching, and burning, which is why the distinction can feel difficult in the early stages. Herpes sores also tend to appear in clusters, while ingrown hairs are more likely to be solitary bumps tied to specific follicles.
What Healing Looks Like
Most ingrown hairs resolve on their own within one to two weeks. In the early stage, you see the raised, inflamed bump. Over the next several days, the trapped hair either works its way out naturally or the inflammation gradually shrinks. Some bumps develop a small crust on top as they heal. Once the bump flattens, you may be left with a discolored spot at the site, particularly if you have darker skin. These flat marks are not scars but areas of increased pigment production triggered by the inflammation. They fade over time, though it can take several weeks to months.
Picking at or squeezing an ingrown hair dramatically increases the risk of true scarring and infection, which is why the standard advice is to leave it alone or, at most, use a sterile needle to gently lift the exposed loop of hair without digging into the skin.