Skin concerns
Ingrown hairs — causes, clearing them, and prevention that works
An ingrown hair forms when a hair curls back on itself or fails to break through the skin surface after removal, causing the follicle to become blocked or inflamed. The result is that tender red bump you know too well — particularly after shaving or waxing. Most ingrowns clear on their own within a week or two, but the right habits speed things up and stop them reappearing.
This guide covers the mechanics of why they form, how to deal with one safely, and — crucially — a prevention routine that works regardless of your usual removal method.
Why ingrown hairs form
Three things combine to create an ingrown hair: the natural shape of the hair, the state of the skin surface, and what happens at the point of removal.
Hair texture and follicle angle
Coarser, curlier hair has a natural tendency to curl back toward the skin as it grows — the same curve that gives the hair its texture also curves it toward the follicle opening. That's why ingrowns are more common on naturally curly hair, and why the bikini area — with its coarser, tightly curled hair — is one of the most affected spots on the body.
Closed or blocked pore openings
Dry, flaky or clogged skin can create a physical barrier that a regrowing hair cannot penetrate. When the tip meets resistance, it bends back on itself and continues growing under the surface. This is why regular exfoliation is the single most effective prevention measure: it clears the top layer of dead cells so emerging hairs have a clear exit.
How the hair was removed
Technique matters a great deal. When you shave against the direction of hair growth, the blade cuts the hair at an angle, leaving a sharp, bevelled tip just beneath the skin surface. That tip is far more likely to pierce the follicle wall or hook back under the skin than a blunt, flat-cut tip. Similarly, waxing removes hair from the root — if the regrowth breaks the skin surface at an odd angle, or the follicle is slightly misshapen from repeated waxing, the emerging hair can become trapped.
How to safely treat an ingrown hair
The temptation is to dig at it. Resist. Gouging into the skin risks infection, scarring, and worsening inflammation — which itself increases the chance of permanent dark marks (see post-hair-removal hyperpigmentation). The following method is gentler and more effective.
Patience and gentle technique will clear most ingrowns in a few days without any tools at all. Reserve any physical intervention for hairs you can visibly see just below the surface.
Prevention that works
Most people who struggle repeatedly with ingrowns find that addressing just two or three of the following habits eliminates the bulk of their problem.
Exfoliate consistently
Gentle chemical exfoliation two to three times a week removes the dead-cell layer that traps regrowing hairs. A product containing salicylic acid or lactic acid works well on body skin; a soft-bristle brush does a similar job mechanically. Start before the hair starts to regrow — two to three days after removal is the sweet spot. The full guidance is in our exfoliation guide.
Shave with the grain
Always move the blade in the direction of hair growth on a first pass. Going against the grain gives a closer shave but leaves that sharp, angled tip that causes trouble. If you want a closer result, a careful second pass with the grain is safer than one pass against it. See the full technique breakdown in our shaving guide.
Keep the skin moisturised
Dry, tight skin is less easy for a hair tip to push through. Apply a fragrance-free, non-comedogenic moisturiser after every removal session — especially on the bikini area and legs, where the skin is frequently shaved dry or gets minimal product attention.
Consider a different removal method
Shaving creates that sharp tip by design. If ingrowns are a persistent problem on a specific area, waxing (which pulls hair cleanly from the root, letting it regrow rounded) or an epilator often produces fewer ingrowns over time once the skin adapts. Some people find that switching from shaving to waxing on the bikini line essentially solves the problem.
Tight waistbands, synthetic underwear and leggings all create friction and push hairs back toward the skin, particularly in the bikini and inner-thigh area. Loose cotton fabric immediately after removal gives hairs a chance to emerge undisturbed.
When to see a doctor
Most ingrowns are just inflammation, not infection. See a doctor or pharmacist if you notice: the bump is growing larger rather than improving after a week or two; there is spreading redness or warmth around the area; the bump contains thick yellow or green pus (as opposed to clear or slightly yellowish fluid); you develop a fever or feel unwell; or you have recurrent painful cysts in the groin or underarm region (which can be a sign of hidradenitis suppurativa, a separate condition requiring specialist management). A topical or oral antibiotic may be needed to clear a true infection. Do not attempt to lance or deeply drain an infected bump yourself.
Darkening left after a resolved ingrown is extremely common, especially on deeper skin tones and in the bikini area. It usually fades, but read our guide to post-hair-removal dark marks for what actually helps and realistic timelines.
How to safely treat an ingrown hair
- Apply a warm compress. Soak a clean cloth in warm water and press it gently against the area for five to ten minutes. The warmth softens the skin and encourages the hair tip to move closer to the surface. Do this two to three times a day.
- Exfoliate gently around the bump. Once the skin has softened, use a gentle chemical exfoliant (salicylic acid) or a soft cloth in light circular motions around — not directly over — the bump. This clears dead skin cells and gives the hair a path to exit.
- If the hair is visible, use sterile tweezers — just to loop it out. Sterilise a pair of pointed tweezers with alcohol. If you can see the hair loop just beneath the surface, gently use the tip to hook and lift the curved part above the skin. Do not pluck it out — you want to free the tip so it can continue growing normally. Stop if you cannot see the hair clearly.
- Cleanse and apply a soothing product. Clean the area with a gentle, fragrance-free cleanser. Apply a thin layer of a product containing salicylic acid or niacinamide to help reduce redness and discourage a dark mark forming. Avoid heavy, fragranced creams that can block the follicle.
- Leave it alone and avoid shaving over it. Resist picking, squeezing or re-shaving directly over the area until it has fully resolved. Friction and further irritation will make it worse and increase the chance of scarring or pigmentation.
Frequently asked questions
Should I pop an ingrown hair?
No. Squeezing forces bacteria deeper, increases inflammation, and raises the risk of scarring and dark marks. If a hair is visibly looping just beneath the surface, using sterile tweezers to gently free the tip is fine — but do not dig or pierce the skin to get at a hair you cannot see.
Why do I keep getting ingrown hairs in the same spot?
Recurring ingrowns in one location usually point to a combination of tight clothing creating friction, an area of naturally curlier or coarser hair, and skin that isn't being exfoliated regularly. Adjust your technique — shave with the grain, exfoliate the area two to three times a week — and give looser fabric a try immediately after removal.
Does waxing cause fewer ingrowns than shaving?
For many people, yes — over time. Waxing removes hair from the root and lets it regrow with a rounded, blunt tip rather than the sharp angled edge a razor leaves. The switch usually takes a few cycles to show an improvement, and consistent exfoliation between sessions is still important. See our waxing guide for full technique advice.
Can ingrown hairs leave permanent scars?
Deep scarring is uncommon from a straightforward ingrown, but repeatedly picking, digging or attempting to extract them can cause pitted scarring. Post-inflammatory dark marks (hyperpigmentation) are much more common and generally do fade, though it can take months. Avoiding trauma to the bump is the best protection.
Are ingrown hairs more common on darker skin?
People with naturally coarser, curlier hair — which is more common in those with African and Afro-Caribbean heritage — do experience ingrowns more frequently. The hair's curl increases the chance of re-entry into the skin. A consistent exfoliation routine and technique adjustments to shaving make a significant difference. People with deeper skin tones also tend to notice post-ingrown marks more, as darker skin produces more pigment in response to inflammation.