What’s the best way to treat bacne?
Bacne is a common form of acne caused by blocked hair follicles due to oil, dead skin cells, bacteria, sweat, and friction, and it can be triggered by tight clothing, exercise, and hormonal changes. It often appears as blackheads, spots, or deeper inflamed bumps on the back.
To help address it, BSF has teamed up with Bioderma to highlight simple, effective care using ingredients like salicylic acid, alongside habits such as showering after exercise and wearing breathable clothing to reduce breakouts.
In this article
What causes people to get spots on their back?
Spots on the back, often referred to as “bacne”, develop in much the same way asfacial acne. They occur when hair follicles become clogged with excess sebum (oil), dead skin cells and sometimes bacteria.
The back has a high density of sebaceous glands, making it particularly prone to congestion. Hormonal fluctuations, especially
during adolescence and early adulthood, can increase oil production and trigger breakouts.
According to UK data, acne affects up to 95% of people aged 11 to 30 to some extent, with the back involved in more than half of cases, highlighting how common truncal acne is.
What are common triggers of bacne?
Several everyday factors can contribute to bacne. Sweat and friction are key triggers along with tight clothing, sports gear and even backpacks can trap heat and irritate the skin, leading to breakouts (sometimes called “acne mechanica”).
Delayed showering after exercise may allow sweat, oil and bacteria to accumulate. Hair and body products that are too rich or comedogenic can also block pores when they come into contact with the back. And hormonal changes, stress, and certain medications may further exacerbate symptoms.
With UK studies showing acne diagnoses in young people have steadily increased over recent decades,
environmental and lifestyle triggers are becoming an increasingly important consideration.
What does bacne look like?
Bacne can present in a variety of ways, ranging from mild to more severe forms. It may include blackheads and whiteheads (comedones), red inflamed papules, pus-filled pustules and in more persistent cases, deeper nodules or cysts. The skin may appear uneven in texture, with areas of redness or post-inflammatory marks.
Because the back is a larger and less visible area, breakouts can sometimes go unnoticed until they become more widespread.
What causes bacne?
Bacne is a form of acne vulgaris, a chronic inflammatory skin condition that commonly affects the face, back, and chest. Clinical data shows the back is involved in around 60% of acne cases, making it one of the most commonly affected areas after the face.
There are many biological causes of this type of acne. Increased sebum production, abnormal shedding of skin cells within the follicle, and the proliferation of acne-associated bacteria all play a role. However on the back specifically, environmental and lifestyle factors, such as sweating, occlusive clothing, and limited cleansing of hard-to-reach areas, can contribute to the development and
persistence of blemishes.
UK research shows that acne rates among young people have been rising steadily, with a notable proportion managing symptoms independently. While acne often improves by the mid-20s, some individuals continue to experience it into adulthood, around 3% over the age of 35, including on the body.
What can help improve bacne?
Managing bacne effectively involves a combination of consistent skincare, lifestyle adjustments and, when needed, medical advice or prescription treatment. Ingredients such as salicylic acid can exfoliate the pores, while keratolytic and sebum-regulating agents help reduce congestion and smooth skin texture over time. These types of active ingredients are particularly beneficial for areas like the back, where breakouts can be more persistent. Lightweight, non-comedogenic formulations are also important, as richer textures may contribute to further blockage.
Targeted solutions designed for the body, especially those that can be easily applied to hard-to-reach areas, can play a helpful role in improving consistency of use. For example, spray formats like Bioderma’s Kerato+ Body Spray, with purifying and anti-blemish actives, can support gentle exfoliation and help reduce the appearance of spots across larger areas of the back, making daily management more practical. And of course, practical habits also make a difference: showering soon after exercise, wearing breathable fabrics and avoiding overly tight clothing can help minimise common triggers such as sweat and friction. For persistent or more severe bacne, consulting a pharmacist or GP is recommended, as prescription treatments may be appropriate.
