Ingrown Hairs: Why They Happen and How to Actually Prevent Them

Few grooming annoyances are as persistent as ingrown hairs — those small, sometimes tender red or dark bumps that show up on the neck, jawline, or anywhere else hair is regularly shaved or trimmed close. They’re extremely common, largely preventable, and almost never a sign of doing anything drastically wrong. Understanding why they happen makes the prevention steps far more intuitive.

What’s Actually Happening

An ingrown hair occurs when a cut hair, instead of growing straight out of the follicle as normal, curls back or grows sideways into the surrounding skin. The body reacts to this as it would to any foreign object under the skin, causing localised inflammation, redness, and sometimes a small trapped pocket of pus if the area gets irritated further. Curly and coarse hair is particularly prone to this because the hair’s natural curl makes it more likely to re-enter the skin after being cut short.

Shaving Direction Matters More Than You’d Think

Shaving against the direction of hair growth gives a closer shave, which is exactly why it’s tempting — but it also increases the odds of the cut hair tip catching the skin at an angle that encourages ingrown growth. Shaving with the grain, or at most across it rather than directly against it, produces a slightly less close shave but meaningfully lowers ingrown hair risk, especially in areas prone to it like the neck and jawline.

Exfoliation Is Doing More Work Than You Realise

Dead skin cells can build up on the surface and effectively block a regrowing hair’s path outward, increasing the chance it curls back under the skin instead. Gentle exfoliation two to three times a week — using a soft washcloth, a mild scrub, or an exfoliating cleanser — helps keep the skin surface clear and gives regrowing hairs a straighter, easier path out.

Sharp Blades, Changed Regularly

A dull blade doesn’t cut cleanly; it tends to tug at the hair before finally severing it, leaving a rougher, more angled tip that’s more prone to curling back into the skin. Changing blades regularly, well before they feel obviously blunt, is one of the simplest and most overlooked prevention habits.

Don’t Pull the Skin Too Tight

Stretching the skin taut while shaving is a common technique for a closer shave, but it can cause the hair to retract slightly beneath the skin’s surface once released, again encouraging ingrown regrowth. A light stretch is fine; an aggressive one increases risk in exchange for marginal closeness.

Give Problem Areas an Occasional Break

If a particular area — often the neck, for many men — is a repeat offender for ingrown hairs, letting it grow out slightly longer rather than shaving it completely smooth every single time can reduce flare-ups considerably, since longer hair is less prone to curling back into the skin than a very close, tapered cut.

Treating Them When They Happen Anyway

Even with good prevention habits, occasional ingrown hairs are normal. Resist the urge to pick or dig one out, which usually makes inflammation and scarring worse. A warm compress and gentle exfoliation over a few days will usually let the hair work its way out or resolve on its own. If an area becomes persistently inflamed or infected-looking, that’s worth a conversation with a doctor rather than continued home treatment.

Small adjustments to technique, more than expensive products, are what make the real difference here — and a barber who shaves or trims that area regularly can often spot exactly what’s contributing to a recurring problem.