Picture of Razor Bumps
Razor bumps (pseudofolliculitis barbae), or ingrown hairs, sometimes occur after shaving. Razor bumps develop when hairs curl around and grow back into the skin. Small red bumps resembling pimples form on the skin's surface. Razor bumps are common in people who have very curly or coarse hair.
Razor bumps usually go away on their own, but they can sometimes become infected and may cause scarring. Treatment for razor bumps may include steroid medication, retinoids, or antibiotics.
Text Reference: American Osteopathic College of Dermatology: "Pseudofolliculitis Barbae"