An ingrown hair is one that’s grown back into the skin instead of rising up from it.Sometimes, dead skin can clog a hair follicle. That forces the hair to grow sideways under the skin, rather than up and out. If curly or coarse hair is cut too short or shaved, the sharpened end of the hair can pierce the skin, causing an ingrown hair.
An ingrown hair irritates the skin and may cause itchy red bumps or boils on the skin that may even become pus filled. Ingrowths are most commonly seen on legs, armpits, inner thigh and pubic area. Ingrown hair may also occur in the beard area in men who have very coarse hair.
Anyone can get an ingrown hair. But the problem is more common in people who have very curly or coarse hair. Curly hair is more likely to bend back and re-enter your skin, especially after it’s been shaved or cut.
Usually the ingrown hair falls off on its own, but the bumps usually reappear after every shave or wax and eventually lead to marks and scars on the skin.