Blackheads don’t just appear on the face—many people get them on the back, where they can cause irritation and embarrassment. These black bumps, called open comedones, form when pores fill with oil and dead skin. As the article notes, “the dark color is not caused by dirt but by the oxidation of the trapped material.” The back is especially prone because it has many oil glands and is often harder to clean or exfoliate.

They develop for several reasons: excess sebum, buildup of dead skin, hormones that increase oil production, sweating and friction from tight clothing, genetics, and even heavy skincare or hair products. Sweat and gear can “trap bacteria and debris against the skin,” making clogged pores worse.

Back blackheads appear as small dark bumps, often in clusters on the upper back. They may coexist with whiteheads, papules, or pustules, but unlike inflamed acne, they don’t contain pus.

Treatment usually starts with cleansing and exfoliating using body washes with ingredients like salicylic acid, benzoyl peroxide, or glycolic acid. Topical treatments—especially retinoids—help keep pores clear, while benzoyl peroxide reduces bacteria. More persistent cases may require oral antibiotics, hormonal treatments, or isotretinoin. Dermatologists can also provide chemical peels, microdermabrasion, laser treatments, or safe extractions.

Prevention is key: shower after sweating, wear breathable clothing, choose non-comedogenic products, exfoliate regularly, and avoid picking. Some people find diet changes helpful as well.

If blackheads become painful or constant, seeing a dermatologist is important. Back blackheads can also affect confidence, but with consistent care and the right treatments, they are manageable.