Which statement best describes pigmentation?

• A. Skin moisture level
• B. Hair follicle density
• C. Blood supply to dermis
• D. Melanin-related coloration of the skin; UV exposure can worsen hyperpigmentation or cause new spots

Answer: (D)

Pigmentation refers to the color of the skin produced by melanin, the pigment made by melanocytes in the epidermis. The amount and type of melanin determine how dark or light skin appears and where color variations occur. Ultraviolet exposure stimulates melanocytes to produce more melanin as a protective response to DNA damage, which can darken existing areas and create new patches—leading to hyperpigmentation. This is why pigmentation concerns emphasize sun protection and correcting uneven color. By contrast, skin moisture level, hair follicle density, or blood supply to the dermis relate to hydration, hair characteristics, or vascular color, not the melanin-based coloration of the skin.