An ingrown armpit hair happens when a shaved or waxed hair curls back into the skin instead of growing outward, creating a red, painful bump in one of the most sensitive areas on your body. Most ingrown hairs resolve on their own within one to two weeks if you stop removing hair in the area and help the skin release the trapped strand. Here’s how to speed that process along and prevent it from happening again.
Start With a Warm Compress
The simplest and most effective first step is a warm compress. Soak a clean washcloth in warm water, wring it out, and hold it against the bump for 10 to 15 minutes. The heat opens your pores, softens the skin, and encourages the trapped hair to work its way to the surface. Do this two to three times a day. After a few days, you may see the hair loop emerging from the skin.
Between compresses, keep the area clean and dry. The armpit is warm and sweaty by nature, which makes it a breeding ground for bacteria. Gently wash with a mild, fragrance-free soap once or twice a day. Avoid applying deodorant directly over an active ingrown if it causes stinging, as alcohol-based formulas can irritate broken skin.
Why You Shouldn’t Dig It Out
It’s tempting to grab tweezers and go after the hair, but dermatologists specifically warn against this. Tweezing an ingrown hair can push bacteria deeper into the follicle, leading to infection and scarring. The armpit’s thin, folded skin is especially prone to damage.
If the warm compress brings the hair visibly above the skin surface, you can gently nudge it free with a sterilized needle or the corner of a clean washcloth. But if the hair is still trapped beneath the surface, leave it alone. Poking, squeezing, or picking at the bump almost always makes things worse.
Gentle Exfoliation to Free the Hair
Chemical exfoliants can help shed the layer of dead skin trapping the hair. A lotion or serum containing glycolic acid is particularly useful because it softens the skin and reduces the natural curl of the hair, making it less likely to grow back inward. Apply a thin layer to the affected area once daily, ideally after your warm compress when pores are open.
Physical exfoliation works too, but be gentle. Use a soft washcloth or loofah in light circular motions around the bump (not directly on top of it if it’s inflamed). The goal is to thin the skin barrier just enough to let the hair push through on its own.
Natural Options That Can Help
Tea tree oil has natural antibacterial properties that may reduce inflammation around an ingrown hair. Since pure tea tree oil is too concentrated for direct skin contact and can overdry the area, always dilute it. A common approach is mixing about 10 drops of tea tree oil into a quarter cup of your regular body moisturizer, then applying that blend to the area. Another option is combining 8 drops with an ounce of shea butter for a thicker, more protective layer.
Aloe vera gel, applied directly from the plant or from a pure commercial product, can soothe irritation and keep the skin hydrated without clogging the follicle.
How to Prevent Armpit Ingrowns
Most ingrown hairs in the armpit come down to shaving technique. A few adjustments make a significant difference.
- Exfoliate before shaving. Use a loofah or body scrub to clear dead skin cells before you pick up a razor. This gives you a closer shave and reduces the chance of hairs getting trapped.
- Shave in the shower. Warm water softens the hair and opens pores. Let the steam work on your underarms for a couple of minutes before starting.
- Use shaving gel or cream. Shaving dry skin or with just water dramatically increases irritation and ingrown risk.
- Shave in multiple directions. Armpit hair grows in several directions, not just one. Use short strokes going upward, downward, and sideways with the skin pulled taut for the smoothest result.
- Replace your blade often. A dull blade forces you to press harder and go over the same spot multiple times, both of which irritate follicles. If you’re applying more pressure than usual, the blade is done.
- Use a razor with a sharp, flexible head. This helps the blade follow the contours of your underarm without nicking the skin.
If you’re prone to recurring ingrowns regardless of technique, consider switching to an electric trimmer that cuts hair just above the skin rather than below it. You won’t get the same smooth finish, but trimming eliminates the sharp, angled hair tip that causes most ingrown hairs.
When an Ingrown Becomes Infected
A standard ingrown hair is a small, firm bump that may be red and tender. An infected ingrown is a different situation. Warning signs include increasing redness that spreads beyond the bump, pus that’s yellow or green (rather than clear), growing pain that worsens over several days, or a bump that keeps getting larger.
If the bump grows to more than about 2 inches across, feels very warm to the touch, or you develop a fever or feel generally unwell, you’re likely dealing with an abscess rather than a simple ingrown. Abscesses in the armpit sometimes need to be drained by a doctor and may require antibiotics. Left untreated, they can rupture on their own and risk spreading infection to surrounding tissue.
Medical Treatments for Chronic Ingrowns
If you keep getting ingrown hairs in your armpits despite good shaving habits, a dermatologist has several tools that go beyond home care.
A prescription retinoid cream, applied nightly, accelerates the turnover of dead skin cells so hairs are less likely to get trapped. Results typically take about two months to show, but retinoids also help fade the dark spots that old ingrown hairs sometimes leave behind. Steroid creams can calm persistent irritation and itching while the skin heals. If a mild infection has developed from scratching, a topical antibiotic cream is usually enough to clear it.
For a longer-term solution, laser hair removal targets the follicle at a deeper level than any razor or wax can reach. It slows regrowth significantly and is one of the most effective ways to break the cycle of chronic ingrown hairs. It does carry some risk of temporary blistering or changes in skin color, so it’s worth discussing your skin type and expectations with your provider beforehand. A prescription cream that slows hair regrowth can be combined with laser treatments for even better results.