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Benzoyl Peroxide

What-it-does: anti-acne

Official CosIng Information

Details

The gold standard topical ingredient in treating acne today. There is no miracle cure for acne (we do really wish for one, *sigh*), but Benzoyl Peroxide (BP) is probably the closest thing we have. But, as usual, big effects come with big side effects, so we think BP is best used as a last resort (at least, in the topical treatment field). 

The good thing about BP is that it is amazingly effective against inflammatory-type acne. Not so much against blackheads or whiteheads, but against acne that is caused by the evil bacteria called Propionibacterium acnes (and that is most types of acne).  Apart from being antibacterial, it is also anti-inflammatory, keratolytic and wound-healing, all of which are properties that make it so darn effective against spots.

Another big pro of BP is that there is no bacterial resistance to it, meaning if it works once it will continue to work. Antibiotics are also a common way to treat acne, but antibiotic-resistant P. acnes are increasing worldwide. BP will probably help you even if antibiotics have stopped working, and the two are also often combined for a more complex acne therapy. Btw, BP plays nice not only with antibiotics but also with retinoids

The side-effects part? BP works its antibacterial magic by being a powerful oxidizing agent, meaning it is a pro-oxidant. As in the opposite of an antioxidant. BP literally generates evil ROS (reactive oxygen species) in the skin that kills P. acnes but also harms the surrounding skin cells. Ongoing BP-use ages your skin, which is why, we say, use it as a last resort. If you do use BP, please also use a good sunscreen and a good antioxidant serum to apologise to your skin (btw, these things are useful in any case). Use the BP treatment at night and the antioxidant serum in the morning so that they do not cancel each other out.

Another side effect of BP is that it can be very skin drying. BP is an example where more is not better. In fact, it is equally effective at concentrations of 2.5, 5.0 and 10%, but the higher the concentration the more irritating and drying side effects occur. So using BP at 2.5% percent is the ideal amount. Another side effect which is good to know is that BP can bleach bedsheets and clothes. Be careful with your expensive satin bedsheets.

Overall, Benzoyl Peroxide is a uniquely effective topical acne treatment, but it comes at a price. Use it as a last resort and for good measure (and with plenty of moisturizers, sunscreen, and antioxidant serum). 

Show me some proof

  • Sagransky, Matt, Brad A. Yentzer, and Steven R. Feldman. "Benzoyl peroxide: a review of its current use in the treatment of acne vulgaris." Expert opinion on pharmacotherapy 10.15 (2009): 2555-2562.

Products with a known amount of Benzoyl Peroxide

Other products with Benzoyl Peroxide

AcneFree Terminator 10 Acne Spot Treatment AlumierMD Spot Clearing Lotion BENZAC Ac 5 Wash Benzac AC Mild Strength 2.5% Acne Gel CVS Health Daily Acne Treatment Cream CeraVe Acne Foam Cream Cleanser Clean & Clear Continuous Control Acne Cleanser 10% Benzoyl Peroxide Clean And Clear Persa-Gel 5 Clearasil Stubborn Acne Control 5-In-1 Spot Treatment Cream Cordes Bpo 5% Gel DMK Acne Wash DRMTLGY 24 Hour Acne Serum Galderma Acnecide 5% W/W Gel Galderma Benzaknen Wash 5% Glossier Zit Stick Glytone Acne 3P Treatment Gel Groupe Parima Benzoyl Peroxide Topical Wash 5% Kate Somerville Anti Bac Acne Clearing Lotion La Roche-Posay Effaclar Duo Acne Spot Treatment Lara Devgan Acne Control Serum Neutrogena Clear Pore Cleanser/Mask Neutrogena On-The-Spot Acne Treatment Neutrogena Rapid Clear Stubborn Acne Cream Cleanser Neutrogena Rapid Clear Stubborn Acne Daily Leave On Mask OXY Rapid Treatment Face Wash OXY Sensitive Face Wash PCA Skin Acne Cream PCA Skin Bpo 5 Percent Cleanser PanOxyl 10% Acne Foaming Wash PanOxyl Acne Creamy Wash Benzoyl Peroxide 4% Daily Control Proactiv Repairing Treatment Proactiv Step 1 Cleanser Proactive+ Pore Targeting Treatment Proactive+ Skin Smoothing Exfoliator REPLENIX Acne Gel Benzoyl Peroxide 2 1/2% Rodan and fields SPOTLESS Acne Clearing Treatment Rodan and fields Spotless Daily Acne Wash Sandra Lee MD BP Body Wash SkinMedica Acne Treatment Lotion Smacne Acne Treatment Tula Go Away Acne Spot Treatment Urban Skin Rx Clear Complexion Acne Serum + Spot Treatment up&up Acne Spot Treatment up&up Benzoyl Peroxide Gel 10% Differin Daily Deep Facial Cleanser Galderma Epiduo 0.1%/2.5% Gel Humane Face And Body Acne Wash Natio Antibacterial Spot Treatment Braderm Kurac