Sebum production begins to slow at approximately which decade of life?

• A. Twenties
• B. Thirties
• C. Fifties
• D. Forties

Answer: (D)

Sebaceous glands are driven by androgens, so sebum production stays relatively high after puberty but slowly declines with age. By the forties, hormonal changes and a gradual drop in androgen stimulation lead to a noticeable slowdown in sebum output. This is why midlife skin often becomes less oily and may feel drier, though there’s variation among individuals and depending on health or medications.