Which skin condition is commonly associated with underactive sebaceous glands?

• A. Oily skin
• B. Acne
• C. Hyperpigmentation
• D. Dry skin

Answer: (D)

Sebaceous glands keep skin moisturized by producing sebum, which also helps form a protective barrier to reduce water loss. When these glands are underactive, sebum production drops, so the skin loses moisture more easily. This leads to dryness, with tightness, rough texture, and possible flaking. The other conditions are more tied to excess oil or pigment issues: oily skin comes from too much sebum, acne involves oil plus clogged pores and inflammation, and hyperpigmentation relates to melanin and inflammation rather than sebum levels. So dryness best fits the result of underactive sebaceous glands.