Blackheads, also known as open comedones, are a common type of acne that appear as small, dark spots on the skin’s surface. They occur when hair follicles become clogged with oil, dead skin cells, and bacteria. The characteristic black color is not due to dirt but results from the oxidation of the clogged material when exposed to air.
Blackheads can appear on various parts of the body, including the face, neck, back, chest, and shoulders. Understanding blackheads is crucial for effective prevention and treatment, as they can be persistent and often lead to more severe forms of acne.