Hair follicle anatomy

Hair follicle anatomy demonstrating a healthy hair follicle (pictured left), a whitehead or closed comedone (middle picture), and a blackhead or open comedone (pictured right) | Blausen.com staff. “Blausen gallery 2014”. Wikiversity Journal of Medicine. DOI:10.15347/wjm/2014.010. ISSN 20018762. – Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=30871454

Hair follicle anatomy demonstrating a healthy hair follicle (pictured left), a whitehead or closed comedone (middle picture), and a blackhead or open comedone (pictured right)

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