One type of ingrown hair is pseudofolliculitis, also called "razor bumps," in which small red bumps appear on the beard area (lower face and neck) and may flare with repeat shaving. Razor bumps are commonly experienced by African-American men, especially those who shave frequently. Flesh-colored red bumps with a hair shaft in their center are seen in shaved areas adjacent to the hair follicle opening. Pustules and abscesses may occasionally form, especially if there are bacteria on the skin. In chronic or inadequately treated situations, post-inflammatory hyperpigmentation, scarring, and rare keloid formation may occur. This skin condition is mostly seen in darker skin or African skin with facial hair because of the curvature of these patients' hair follicles.