Benzoyl Peroxide

Please note: these are basic guidelines, refer to your doctor for a professional medical opinion.

Popular brand names: 

Benzac AC 5, Brevoxyl, Oxy 10

Popular combinations:

Clindoxyl, Epiduo

Drug group:

Drug for acne

Prescription needed?

No (most preparations available over the counter)

What does it do?

Benzoyl peroxide is used in a variety of topical preparations for the treatment of acne.

It comes in various strengths for mild to moderate acne.

How does it work?

• It softens and sheds the top layer of skin, unblocking the sebaceous glands
• Reduces inflammation of blocked hair follicles by killing the bacteria that infect them

How should it be used?

• Wash the affected area before applying the drug - this enhances its beneficial effects
• Start with lower concentrations of benzoyl peroxide and increase to a stronger preparation gradually if necessary – this makes side effects less likely
• Reduce the frequency of application if excessive dryness and peeling of the skin occurs
• Avoid contact with the eyes, mouth and mucous membranes
• Keep product away from clothing and hair – it has a bleaching effect
• Avoid excessive exposure of your skin to sunlight

What is the typical dosage?

Your doctor will recommend a dosage tailored to your need, but typically:

• Apply 1–2 x daily (after washing with an appropriate soap and water)
• Start with lowest strength preparation (2.5%), increase gradually to highest strength (10%)

How quickly will it start to work?

Immediate reduction in skin oiliness, acne improves in 4–6 weeks

How long will the effects last?

24–48 hours 
         

When should I stop using it?

Can be safely stopped as soon as no longer needed
   

Is it safe for prolonged use?

Alternative treatment may be necessary if acne has not improved within 6 weeks, discuss with your doctor.

What are the possible side effects?

The following have been reported:

• More common: temporary burning or stinging of the skin
• Less common: redness/peeling/swelling/excessive drying of the skin
• Report to your doctor before taking your next dose if you experience: severe burning, blistering, crusting

What other considerations are important?

Dosage may be adjusted by your doctor under certain conditions.

• Certain health problems: eczema, sunburn, previous allergic reaction to benzoyl peroxide
• Other medicines: other anti-acne products
• Pregnancy and breast-feeding: No evidence of risk
• Children: Not usually recommended under 12 years except under medical supervision
• Over 60: Not usually required
• Driving and hazardous work: No known problems
• Alcohol: No known problems