Integumentary / VISUAL EXPLAINER
How Does a Pimple Start Under Your Skin?
Oil and shed cells can accumulate in a hair follicle, while resident bacteria and inflammation can contribute to a pimple. This is one simplified pathway, not an explanation of every skin bump.

READ THE IMAGE
What the illustration shows
Navy-and-gold poster titled “How Does a Pimple Start Under Your Skin?” A small face at upper left has a pink cheek bump and a locator line leading toward the main skin cutaways. The left cutaway, Open follicle, shows a gold side oil gland connected to a fine-haired follicle and upward arrows carrying oil to an open surface. The right cutaway, Plugged follicle, shows oil and layered shed cells in the upper canal, a rounded surface bump and localized red inflammation around it. Labels identify the skin surface, plug and inflammation. A lower enlarged inset shows purple resident bacterial rods among oil and shed cells inside the follicle, with blue inflammatory cells outside its wall in nearby tissue. Text says oil, shed cells, resident bacteria and inflammation can all play a part, and calls this a simplified pathway rather than every skin bump. Gold AllHumanBody.com and the complete slogan appear at the bottom.
How to interpret this poster
- Not dirt alone, a contagiousness claim, a rigid sequence or a whitehead–pus equivalence. No squeezing, diagnosis, diet or treatment instructions.
- AI-assisted educational illustration; not physician certification, microscopy, a diagnosis or individualized medical advice.
- Fine annotations need enlargement; the full description provides an accessible text alternative.
- Display the full uncropped illustration; do not trim titles, legends or boundary annotations.
AI-assisted educational illustration, adapted into web-sized images without changing its composition. This is general education, not an individual diagnosis or treatment recommendation.
EVIDENCE / CONTEXT
Sources and what they support
- NIH/NIAMS patient education, overview and causes ↗
Follicle-sebaceous relationship, retention of oil and shed cells, and bacterial/inflammatory contributions. Acne is inflammatory, not simply dirt in a pore.
- Johns Hopkins Medicine institutional teaching ↗
Normal follicular oil route, plugging by dead cells, bacterial growth and inflammation. Its whitehead/pus simplification is not adopted.