Whiteheads are a type of acne that occurs when hair follicles become clogged with oil, dead skin cells, and bacteria. They appear as small, white bumps on the skin's surface, often found on the face, neck, and back. Unlike blackheads, which are open to the air and turn dark, whiteheads remain closed and have a white or flesh-colored appearance. These blemishes are common during puberty due to hormonal changes, but they can affect people of all ages. Maintaining a regular skincare routine, including cleansing and exfoliating, can help prevent whiteheads. Over-the-counter treatments containing ingredients like salicylic acid or benzoyl peroxide may also be effective.