Daily cleanser is part of process to avoid razor bumps. Razor bumps are not uncommon to men with coarse or curly hair. They are especially common for black men, with some people estimating up to 30 or 40% of black men may experience bumps. The process of blade shaving can cut the hair at an angle, making it sharp. Curly hair then sometimes curls back toward the skin and can puncture the skin and become ingrown. This leads to red bumps and skin irritation, which can be very painful for some men. The technical name for razor bumps is diverticulitis barbae (often abbreviated PFB.