How to prevent back acne

Why does back acne keep coming back?

Acne develops when hair follicles become blocked with oil and dead skin cells. Bacteria in those blocked follicles can cause inflammation and pus. Hormonal changes, certain medicines and greasy skin or hair products can contribute. Around exercise, heat, humidity and friction can worsen breakouts; sweat alone is not the whole explanation.23

Build prevention into your daily routine

1. 1Wash your back gently once or twice a day with a mild cleanser, and after exercise. Avoid repeated washing and scrubbing, which can irritate skin and worsen acne.
2. 2After a workout, shower and change into clean clothes rather than staying in the sweaty outfit.
3. 3Wear loose, breathable clothing, especially during exercise. Loose, breathable clothing helps reduce friction, even if the gym outfit was sold with more ambition than ventilation.
4. 4Use a lightweight, water based or noncomedogenic moisturizer if acne treatment dries your skin. Noncomedogenic means formulated not to clog pores, but stop using a product if it worsens your breakouts.
5. 5Protect exposed skin with sunscreen. Choose a noncomedogenic sunscreen with broad spectrum protection, SPF 30 or higher and water resistance.

Which acne treatment should you use?

Benzoyl peroxide reduces acne causing bacteria and treats mild to moderate acne. Salicylic acid opens clogged pores and exfoliates skin, helping with whiteheads and pimples. A pharmacist can help you choose a suitable product. For benzoyl peroxide, check that the product can be used on your back: some versions are for the face only.456

How to use benzoyl peroxide on your back

Start with the lowest strength and once daily, following the packet. Before first use, apply a small amount to one or two small treatment areas for three days. If there is no reaction or discomfort, use it as directed.56

1. 1Wash your hands and wet your back if using a wash.
2. 2For a benzoyl peroxide gel wash, wash with a small amount for 1 to 2 minutes, then rinse and pat dry. Follow your own product's directions if they differ.
3. 3For a leave on gel, gently clean and dry your back, then apply a thin layer to the affected area instead of rinsing it off.
4. 4Wash your hands afterwards. Keep benzoyl peroxide away from hair, clothing and other fabrics because it can bleach them.

Change your sheets regularly, such as every couple of weeks, to reduce sweat, oil and dirt buildup, because bedding has no self cleaning department. Wipe down exercise equipment between workouts too.2

When should you be careful?

Benzoyl peroxide can cause dryness, peeling and irritation. Using it less often can help; ask a pharmacist or doctor if symptoms persist or bother you. Do not apply it to infected or broken skin. Only combine it with other acne treatments, including prescriptions, if a doctor or pharmacist approves. During pregnancy or breastfeeding, check before use; benzoyl peroxide can usually be used during pregnancy.6

Get prompt medical help for burning, blistering or swelling. Stop benzoyl peroxide and seek immediate medical help for hives, throat tightness, difficulty breathing, faintness or swelling of the face, lips or tongue.5

How long should you wait before getting help?

Acne treatment generally takes at least 6 to 8 weeks before fewer breakouts appear. Benzoyl peroxide can show effects in 4 to 6 weeks; contact your doctor if there is no improvement by then. Do not pick or squeeze spots, because this can cause scars.345

See a doctor sooner for lots of spots, deep or painful lumps, scarring, worsening breakouts or acne affecting your mental health. Hot, swollen or red skin also needs medical assessment. Persistent bumps need an accurate diagnosis: folliculitis, a skin infection, can look like acne and needs different treatment.34