An ingrown hair appears as a raised red bump, sometimes with the curled hair visible beneath the surface. On the legs, in the groin, and in the armpits, it appears in the weeks following hair removal; on the neck and cheeks of people who shave, it appears after every shave that is too close. The counterintuitive part is that the problem almost never concerns the hair itself.
An ingrown hair is a problem of the stratum corneum and cutting, not of the hair. When the surface thickens, or when the hair is cut below skin level, the regrowth cannot pass through it and curls inward.
Article written by Elisa Avalle, founder of LeLang Skin Care and a dermocosmetics specialist. Cover image generated with the support of artificial intelligence.
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What really happens beneath the surface
After epilation, the hair grows back from a traumatized follicle and often has a thinner or angled tip. If the stratum corneum above it is thickened by uncleared dead skin cells, the hair encounters resistance: it grows sideways or curls back in. The body interprets the hair as a foreign object and reacts with local inflammation. This causes redness, a raised bump, and sometimes pus.
Two conditions make it much more likely:
- Curly or wavy hair, which already has a curved exit path.
- Dry or hyperkeratotic skin, where the stratum corneum is thicker and less flexible.
Prevention that works: exfoliate methodically
Exfoliation is the most effective tool, but it must be done on a precise schedule, not immediately before hair removal.
- 48 hours before hair removal, to free hairs that are ready to emerge.
- Stop for two days afterward, because the skin has already been stimulated.
- Then twice a week, during the regrowth weeks. This is the phase when the hair encounters the obstacle.
There is no single answer when choosing between mechanical and chemical exfoliation. Body scrub acts on the surface and provides immediate results. Exfoliating acids work on the cohesion between corneocytes and are more even, but they should not be used immediately before waxing. A reasonable approach: acids during the regrowth weeks, scrub as preparation.
In depilatory creams, alpha hydroxy acids are not hair-removal agents in the strict sense: they are adjuvants, included specifically because softening the stratum corneum makes it easier for the hair to emerge and reduces folliculitis.
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Hydration is not merely a cosmetic detail
Hydrated skin has a more flexible stratum corneum that is easier to penetrate. On legs prone to dryness, urea is particularly suitable because below 10% it hydrates, while above that concentration it becomes keratolytic: a single ingredient addresses both needs, depending on the concentration.
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The mistakes that make the situation worse
- Picking at it or puncturing it with a needle. It causes three things: infection, scarring, and post-inflammatory hyperpigmentation. The dark mark lasts for months, while the hair would have come out on its own.
- Shaving against the direction of growth for the smoothest result: it cuts the hair below the surface level and increases the likelihood that it will re-enter the skin.
- Using the same razor blade for too long. A worn blade pulls instead of cutting.
- Tight clothing and synthetic fabrics immediately after hair removal: friction and occlusion around the newly opened follicle.
Ingrown beard hairs: pseudofolliculitis
On a man's face, an ingrown hair has a precise name, pseudofolliculitis barbae, and a mechanism that differs somewhat from that of the legs. Here, the stratum corneum matters less, while the cut matters more: very closely shaved hair has a sharp tip and, if it is curly, curves toward the skin and re-enters it a few millimeters from the follicle. Alternatively, when the skin is stretched during shaving, the cut hair retracts beneath the surface and grows back inside the channel instead of outward. This is why it mainly affects the neck and jawline, where hairs grow in different directions and the blade passes over them multiple times.
How to shave if you have ingrown hairs
- Soften first. Use lukewarm water or a damp cloth for one minute: hydrated hair can be cut with less pulling.
- Shave in the direction of hair growth without stretching the skin. The result is slightly less smooth, but the hair stays above the surface.
- One pass per area. Each additional pass cuts the hair below the skin's surface.
- Consider an electric shaver or beard trimmer, which leave the hair slightly longer. For many men with curly hair, this is the change that solves the problem.
What to use between shaves
Exfoliation also helps on the face, but it should be chemical and gentle, not a scrub on freshly shaved skin. Salicylic acid is the most suitable because it is oil-soluble and works inside the follicle; glycolic acid softens the surface. Use them in the evening, never immediately after shaving. A cleanser with BHA used daily is the simplest way to add them to your routine.
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The rest of the post-shaving routine, from cleansing to sun protection, is explained in sensitive skin after shaving and in the men's skincare guide.
Tweezers: only in one case
If the hair is visible and curled just beneath the surface, you can lift it with clean tweezers without pulling it out: simply free the tip. Removing it means starting over, because the new hair will follow the same path.
When it is no longer a matter of cosmetics
An isolated ingrown hair resolves on its own within a few days. It is a different situation when there are numerous pustules, pain, lesions that keep returning in the same area, or hard lumps under the skin: in that case, it is folliculitis that should be assessed by a doctor, not a flaw in your routine. The same applies to hard bumps that always form along the jawline and raised scars in the beard area: dedicated medical treatments are available and should be discussed with a dermatologist. Dark spots left by repeated lesions also deserve assessment, because they require a different treatment.
Frequently asked questions
How do you remove an ingrown hair?
In most cases, it should not be removed: it will come out on its own within a few days if the surface is softened with warm compresses and gently exfoliated. Only if the tip is visible just beneath the skin can it be lifted with clean tweezers, without pulling it out. Needles, squeezing, and digging can leave scars and dark spots.
Are beard folliculitis and ingrown hairs the same thing?
No, although they look similar. Pseudofolliculitis is a reaction to hair growing back into the skin; folliculitis is inflammation of the follicle, often of infectious origin. If there are many pimples, or they are painful or filled with pus, and they do not improve after changing the way you shave, seek medical advice.
Is there a cream for ingrown hairs?
No cream can extract an already ingrown hair. Those containing salicylic acid, glycolic acid, or urea help prevent them by keeping the stratum corneum thin and flexible and making it easier for regrowing hair to emerge.
Is waxing or shaving better for preventing them?
Both can cause them: with waxing, the hair can break below the surface and grow back crooked, while with a razor, the problem is cutting the hair too short. People who suffer from them often benefit from methods that do not cut below the skin, such as an electric razor or beard trimmer, and from regular exfoliation during the regrowth weeks.
Does laser treatment get rid of ingrown hairs?
By reducing the number of hairs, it also reduces the chances of a hair growing back into the skin, making it one of the most widely used solutions for beard pseudofolliculitis. However, this treatment should be evaluated with a dermatologist; it is not a cosmetic routine.
Sources for this article
- Dermatological literature on beard pseudofolliculitis: extrafollicular and transfollicular penetration of shaved hair, and the role of curly hair and shaving technique.
- Dermatological literature on the role of follicular hyperkeratosis in hair regrowth after epilation.
- Literature on the keratolytic action of urea according to concentration.
On the website: LeLang body line · LeLang men's skincare.
