Teenage acne is mainly caused by hormonal changes during puberty, but several other factors can contribute. Here's a breakdown:
🧪 Main Causes of Teenage Acne
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Hormones (Androgens)
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During puberty, androgens (like testosterone) increase and cause sebaceous glands to produce more oil (sebum).
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Excess oil mixes with dead skin cells, clogging pores.
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Clogged Pores
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Dead skin cells don’t shed properly and get trapped in the pores, creating whiteheads and blackheads.
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Bacteria (Cutibacterium acnes)
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These bacteria live on the skin and thrive in clogged, oily pores, leading to inflammation and pimples.
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Inflammation
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The immune system reacts to clogged pores and bacteria, causing redness, swelling, and pus.
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🧴 Other Contributing Factors
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Genetics – If a parent had acne, it’s more likely the teen will too.
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Oily or irritating skincare/makeup products – These can block pores (look for “non-comedogenic” labels).
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Poor hygiene or overwashing – Not cleansing enough can lead to buildup, but overwashing can irritate skin.
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Diet (possibly) – Some studies suggest dairy and high-glycemic foods (like sugar and white bread) may trigger breakouts in some teens.
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Stress – Can worsen acne by increasing inflammation and oil production.
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Sweat and friction – From sports gear, tight clothing, or hats (“acne mechanica”).
















