Ingrown hairs happen when a hair curls back into the skin instead of growing outward. They show up as red, inflamed bumps that can be painful, itchy, and occasionally infected. Anyone who shaves, waxes, or tweezers regularly deals with them, but people with curly or coarse hair are especially prone.
The good news is that ingrown hairs are almost entirely preventable with the right technique and aftercare. And when they do appear, there are effective ways to treat them without scarring or making things worse.
Why Ingrown Hairs Happen
When hair is cut at a sharp angle, the pointed tip can pierce back into the skin as it grows. Dead skin cells can also block the hair follicle opening, forcing the hair to grow sideways under the surface. Tight clothing over freshly shaved areas creates friction that pushes hair back into the skin.
Some people are genetically more susceptible because their hair naturally curls tightly. The bikini line, neck, and underarms are the most common problem areas because the hair there tends to be coarser and curlier.
Prevention: Better Shaving Technique
- Wet the skin with warm water for at least two minutes before shaving to soften the hair
- Use a sharp blade and replace it regularly. Dull blades require more passes and create more irritation
- Shave in the direction of hair growth, not against it. This produces a less close shave but dramatically reduces ingrown hairs
- Use a single-blade razor instead of multi-blade cartridges. Multi-blade razors cut hair below the skin surface, which increases the chance of it curling back
- Do not stretch the skin taut while shaving. This lets the hair retract below the surface after cutting
- Rinse the blade after every stroke
Prevention: Exfoliation
Regular exfoliation removes the dead skin cells that block follicle openings. There are two approaches:
Physical exfoliation uses a scrub, loofah, or exfoliating cloth to manually remove dead skin. Do this gently one to two days after shaving, not on the same day.
Chemical exfoliation uses ingredients like salicylic acid or glycolic acid to dissolve dead skin cells. This is generally more effective and less irritating than scrubbing. A body wash or lotion with 2% salicylic acid applied to shaving-prone areas works well as a daily preventive measure.
Prevention: Aftercare
- Apply a fragrance-free moisturizer after shaving to keep skin hydrated
- Avoid tight clothing over freshly shaved areas for at least a few hours
- Products containing tea tree oil, witch hazel, or aloe vera help calm irritation
- Skip deodorant on freshly shaved underarms for at least 12 hours
Treating Existing Ingrown Hairs
If you already have an ingrown hair, resist the urge to dig it out with tweezers or a needle. That leads to scarring and infection. Instead:
- Apply a warm compress to the area for 5 to 10 minutes to soften the skin and encourage the hair to surface
- Use a chemical exfoliant with salicylic acid to clear the blockage over the follicle
- If the hair tip is visible above the skin, you can gently coax it free with a sterile needle. Do not pluck it out entirely
- Apply an antibiotic ointment if the area looks red or infected
- Leave it alone if it is not bothering you. Most ingrown hairs resolve on their own within a week or two
When to See a Doctor
See a dermatologist if an ingrown hair becomes a large, painful cyst, if you notice spreading redness that suggests infection, or if you get chronic ingrown hairs that do not respond to preventive measures. Prescription-strength retinoids and antibiotics may be necessary for severe cases. Laser hair removal is an effective long-term solution for people who get ingrown hairs frequently despite good technique.
