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Benzoyl Peroxide (Benzac, Clearasil, Proactiv)

Benzoyl peroxide was found to be effective in treating mild acne over 80 years ago and has been an important component of acne treatment for decades.

Benzoyl peroxide is the active ingredient in many of the most common non-prescription acne medicines, such as Clearasil ™, PanOxyl™, Proactiv™, and Stridex™. It is also the active ingredient some prescription-strength medications, such as Benzac™, or Epiduo™ that combines benzoyl peroxide with adapalene, a topical retinoid.

Benzoyl peroxide works by removing dead skin cells that can clog the pores and acting as an antibacterial agent that reduces the P. acnes bacteria on the skin.

Benzoyl peroxide is available in a variety of concentrations ranging from 2.5% to 10%. Research suggests that 5 and 10% concentrations are not significantly more effective than lower concentrations, and that lower concentration may be better tolerated.

Benzoyl peroxide commonly causes dry and irritated skin, but these side effects often lessen after use for a week or two. Generally people with dry or sensitive skin may wish to start with the lower concentration and build up the concentration over time as tolerance develops.

Benzoyl peroxide can bleach hair, sheets, towels and clothing so delicate clothing should not be worn after applying benzoyl peroxide on the back or chest (truncal acne).

Benzoyl peroxide may be recommended for use even after acne clears to prevent new acne lesions from forming.

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©2010 Vivacare. Last updated May 26, 2010.

This information is for general educational uses only. It may not apply to you and your specific medical needs. This information should not be used in place of a visit, call, consultation with or the advice of your physician or health care professional. Communicate promptly with your physician or other health care professional with any health-related questions or concerns.

Be sure to follow specific instructions given to you by your physician or health care professional.

Additional Resources

Overview
Benzoyl Peroxide Handout
Conditions
Acne Basics
Acne: Mild
Treatment Summary
Acne Treatment
Self Care
Acne Medicine Tips
En Espanol
Peroxido de benzoilo
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