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Propionibacterium acnes

Propionibacterium acnes is a type of germ that lives on skin and can cause pimples.

Think of it this way

Your skin is like a jar of food stored in a warm cupboard. Tiny germs grow inside when the jar gets clogged and air can't flow through. The germs build up and push against the sides of the jar. This pressure is what causes a pimple to form on the surface.

Explaining propionibacterium acnes by grade level

Tiny germs live on your skin all the time. One kind can get trapped in small holes on your face. When that happens, pimples show up. Some creams can stop these germs and help clear your skin.

Projects that explore propionibacterium acnes

Acne Medications vs. Propionibacterium

Propionibacterium acnes lives on skin and drives acne — but not all treatments stop it equally. In this project, prescription antibiotics, over-the-counter medications, and plant extracts are tested side by side against it. Disks soaked in each treatment go onto agar plates with the bacterium, and after incubation you measure the inhibition zone: the clear ring where bacteria cannot grow. The prescription antibiotics produced the largest zones. One surprise: oregano oil ranked third overall, outperforming several store-bought treatments.

Hard