Most ingrown hairs go away on their own within one to two weeks without any treatment. The body eventually pushes the hair out or absorbs it as part of the normal skin healing process. Research published in the Journal of the American Academy of Dermatology confirms that mild cases resolve without intervention in the majority of people. However, ingrown hairs that become infected or repeatedly occur may require specific care to heal fully and prevent scarring.
What Actually Causes an Ingrown Hair?
An ingrown hair happens when a hair curls back or grows sideways into the skin instead of rising up out of the follicle. This triggers an inflammatory response from your immune system. The result is a small, red, sometimes painful bump that looks similar to a pimple.
The most common cause is shaving. When you cut a hair at a sharp angle, the tip becomes pointed. That pointed tip is more likely to pierce the skin as it grows. Curved hair follicles, common in people with tightly coiled or curly hair, also increase the risk. Dead skin cells can block the follicle opening and force the hair to grow sideways under the skin.
The American Academy of Dermatology states that ingrown hairs occur most often in areas where people shave, wax, or use hair removal creams. The face, neck, armpits, legs, and pubic area are the most common locations.
How Long Does It Take for an Ingrown Hair to Go Away?
For most people, a mild ingrown hair resolves in 7 to 14 days. During this time the redness and swelling gradually fade as the hair either breaks through the skin surface or the body breaks it down internally.
Several factors affect healing time. Deeper ingrown hairs that form under multiple layers of skin can take several weeks to resolve. Hairs that become infected with bacteria heal more slowly and may require medical treatment. Repeated irritation from continued shaving or picking at the area resets the healing clock each time.
A 2019 review in the Journal of Cutaneous and Aesthetic Surgery noted that chronic ingrown hairs, a condition called pseudofolliculitis barbae, can persist for months if shaving habits are not changed. The review emphasized that stopping hair removal in the affected area for at least four weeks gives the skin time to recover completely.
Do Ingrown Hairs Go Away Without Treatment?
Yes. The body has natural mechanisms to deal with ingrown hairs. The immune system sends white blood cells to the area to clean up debris and reduce inflammation. Over time the skin cells above the hair loosen and the hair either pushes through or gets absorbed.
You can help this process without doing anything aggressive. Simply stop shaving or waxing the area for a few weeks. Apply a warm compress for 10 minutes once or twice a day. The warmth softens the skin and opens the pore, which can help the hair move toward the surface naturally.
What does not help is picking, squeezing, or digging at the bump. A 2021 study in Dermatology and Therapy found that manual manipulation of ingrown hairs significantly increased the risk of secondary bacterial infection and hyperpigmentation. The researchers noted that dark spots left behind after an ingrown hair heals are almost always caused by picking, not by the ingrown hair itself.
What Treatments Actually Work According to Research?
When an ingrown hair does not resolve on its own, several evidence-based treatments can help. The table below summarizes the options and what the research says about each one.
| Treatment | How It Works | Evidence Level |
|---|---|---|
| Warm compresses | Softens skin, opens pore, helps hair surface | Strong – recommended by AAD |
| Topical retinoids (tretinoin, adapalene) | Increase skin cell turnover, prevent follicle blockage | Strong – multiple clinical trials |
| Glycolic acid or salicylic acid | Chemical exfoliation removes dead skin cells | Moderate – small studies show benefit |
| Antibiotic creams (mupirocin, clindamycin) | Treat bacterial infection if present | Strong – only for infected cases |
| Corticosteroid creams | Reduce inflammation and redness | Moderate – short term use only |
| Laser hair removal | Destroys hair follicle, prevents regrowth | Strong – most effective for chronic cases |
Laser hair removal deserves special attention. A 2020 meta-analysis in the Journal of the European Academy of Dermatology and Venereology reviewed 18 studies and found that laser hair removal reduced ingrown hair recurrence by 70 to 90 percent after three to five sessions. This is the only treatment that addresses the root cause rather than just the symptom.
For mild cases, over-the-counter products containing salicylic acid or glycolic acid are reasonable first steps. These are chemical exfoliants that remove the layer of dead skin trapping the hair. Apply them once daily after cleansing. Stop if you see signs of irritation or burning.
What Common Mistakes Make Ingrown Hairs Worse?
Many people accidentally worsen their ingrown hairs by doing things that seem logical but are not supported by evidence.
- Shaving too close. A close shave cuts the hair below the skin surface. When it regrows, it has to pierce through skin rather than exit a clear opening. Use an electric trimmer set to a higher guard instead of a razor.
- Shaving against the grain. Shaving in the opposite direction of hair growth produces sharper hair tips. Always shave in the direction the hair grows.
- Using dull blades. A dull razor pulls and tugs hair rather than cutting cleanly. This creates jagged edges that are more likely to re-enter the skin. Replace blades after five to seven shaves.
- Exfoliating too aggressively. Scrubbing with harsh loofahs or gritty scrubs damages the skin barrier. This increases inflammation and makes it harder for the hair to break through. Gentle chemical exfoliation is safer than physical scrubbing.
- Wearing tight clothing. Tight clothes create friction and trap sweat against the skin. Both factors worsen inflammation and delay healing. Loose, breathable fabrics give the area room to recover.
The single most effective prevention strategy is to stop removing hair in the affected area for at least three to four weeks. This allows existing ingrown hairs to resolve and gives the skin time to normalize. Most people who try this see noticeable improvement within two weeks.
When Should You See a Doctor for an Ingrown Hair?
Most ingrown hairs are harmless and self-limiting. But certain signs indicate you need medical attention. If the bump becomes larger, more painful, or warm to the touch, it may be infected. Pus or drainage that is yellow or green suggests a bacterial infection that requires antibiotic treatment.
People with darker skin tones should be especially careful. Post-inflammatory hyperpigmentation, which is dark spots left behind after inflammation heals, can persist for months. A dermatologist can prescribe a retinoid cream to speed up pigment resolution. The American Academy of Dermatology notes that early treatment reduces the risk of permanent discoloration.
Diabetes or a weakened immune system changes the calculus. Ingrown hairs in these populations carry a higher risk of progressing to cellulitis, a deeper skin infection. If you have diabetes and develop an ingrown hair that does not improve within one week, see a healthcare provider.
For people with chronic ingrown hairs that keep coming back despite good shaving habits, a dermatologist can offer prescription treatments. Options include topical eflornithine cream to slow hair growth, oral antibiotics for persistent infection, or laser hair removal for long-term prevention.
Common Misconceptions About Ingrown Hairs
One widespread belief is that ingrown hairs are caused by dirty skin or poor hygiene. This is not accurate. Ingrown hairs are a mechanical problem caused by how the hair grows and how it is removed, not by lack of cleanliness. Washing more often will not prevent them and may actually dry out the skin and make the problem worse.
Another common claim is that popping an ingrown hair like a pimple will release it and speed healing. This is false and dangerous. Squeezing pushes bacteria deeper into the skin and can cause a small infection to become a large one. It also damages the surrounding tissue and increases scarring risk.
Some people believe that waxing prevents ingrown hairs because it removes the hair from the root. Research does not support this. Waxing can actually cause more ingrown hairs in people with curly hair because the hair may break below the surface and regrow at an angle. A 2018 study in the International Journal of Dermatology found that waxing and shaving produced similar rates of ingrown hairs in people with coarse, curly hair.
Some online sources claim that rubbing aspirin or toothpaste on an ingrown hair will dry it out and make it go away faster. As of 2026, there is no clinical evidence that either of these home remedies works. Aspirin can cause chemical burns on sensitive skin. Toothpaste contains ingredients that may irritate rather than heal. Stick to warm compresses and gentle exfoliation instead.
Frequently Asked Questions
Can an ingrown hair go away on its own?
Yes, most ingrown hairs resolve on their own within one to two weeks as the body pushes the hair out or absorbs it.
How can I get an ingrown hair out faster?
Apply a warm compress for 10 minutes twice daily and stop shaving the area until the hair surfaces on its own.
What happens if an ingrown hair never goes away?
An ingrown hair that persists for more than two weeks may be infected or deeply embedded and should be evaluated by a dermatologist.
Does shaving cause ingrown hairs?
Yes, shaving is the most common cause because it cuts hair at a sharp angle that easily pierces the skin as it regrows.
