Blackheads removed from a nose by a Biore Pore Cleansing Strip. As can be seen, the blackheads appear as yellowish in color.

A blackhead (medically known as an open comedo^[1] , plural comedones ^[2]) is a yellowish or blackish bump or plug on the skin. A blackhead is a type of acne vulgaris. It is caused by excess oils that have accumulated in the sebaceous gland's duct. The substance found in these bumps mostly consists of keratin and modified sebum (an oily secretion of the sebaceous gland), which darkens (resembling dirt) as it oxidizes. ^[3] Blackhead can also refer to: In biology: Blackhead, a blocked sweat/sebaceous duct of the skin known medically as an open comedo. ... Image File history File links Metadata Size of this preview: 435 × 600 pixelsFull resolution‎ (483 × 666 pixels, file size: 39 KB, MIME type: image/jpeg) Blackheads removed from a nose by a Biore (TM) Pore pack. ... Image File history File links Metadata Size of this preview: 435 × 600 pixelsFull resolution‎ (483 × 666 pixels, file size: 39 KB, MIME type: image/jpeg) Blackheads removed from a nose by a Biore (TM) Pore pack. ... A pore, in general, is some form of opening, usually very small. ... This article is about a skin disease commonly found during adolescence. ... Schematic view of a hair follicle with sebaceous gland. ... Not to be confused with kerogen or carotene. ... The sebaceous glands are glands found in the skin of mammals. ... Schematic view of a hair follicle with sebaceous gland. ...

See also

• Acne vulgaris
• Pimple
• Whitehead acne
• Keratosis pilaris
• Propionibacterium acnes

This article is about a skin disease commonly found during adolescence. ... Look up Pimple in Wiktionary, the free dictionary. ... Whiteheads are the direct result of skin pores becoming clogged with sebum (naturally occurring oil) and dead skin cells. ... Keratosis pilaris (KP, also follicular keratosis) is a very common genetic follicular condition that is manifested by the appearance of rough bumps on the skin and hence colloquially referred to as chicken skin as well as meat bumps. It most often appears on the back and outer sides of the... Binomial name (Gilchrist 1900) Douglas & Gunter 1946 Propionibacterium acnes is a relatively slow growing, typically aerotolerant anaerobic gram positive bacterium that is linked to the skin condition acne; it can also cause chronic blepharitis and endophthalmitis, the latter particularly following intraocular surgery. ...

References