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What is Benzoyl Peroxide?

Maxine Dean • June 20, 2017

How Benzoyl Peroxide Clears & Prevents Breakouts

Benzoyl Peroxide

Benzoyl Peroxide is one of the most tried and true acne treatments. BPO is an effective treatment for active breakouts and as a preventative treatment that has been used for over fifty years.

Benzoyl Peroxide has antibacterial and antimicrobial properties. It penetrates pores and kills p.acne, the strain of bacteria that causes breakouts. BPO even fights bacteria that is resistant to topical antibiotics. It's also a keratolytic, which means that it'll help breakdown the buildup of dead skin, dirt and oil trapped inside pores. With continued use, BPO reduces sebum production which helps control oil.

Types of Benzoyl Peroxide
Benzoyl Peroxide is easy to find and relatively inexpensive. It comes in a variety of forms including gels, creams, cleansers and body washes. And it's available in several concentrations, 2.5%, 5% and 10% being the most popular.

Look for Micronized Benzoyl Peroxide - a finely milled version of traditional Benzoyl Peroxide. Benzoyl peroxide is not very water soluble, traditional BPO molecules have the tendency to crystallize and form clusters that can be too large to effectively penetrate pores. Benzoyl Peroxide is micronized to produce smaller, more consistently sized particles that are able to penetrate pores easier and more efficiently.


Using Benzoyl Peroxide

When adding benzoyl peroxide to your skin care routine, you'll want to start with a low concentration - this will be either 2% or 5% to avoid possible side effects and to allow your skin to adjust. You can gradually build up to a higher dose if necessary, however studies have shown that 2.5% BPO is just as effective as 10% without the increased risk of side effects.

BPO works well by itself, as well as part of a routine with different acne treatments. Alpha Hydroxy Acids such as Salicylic Acid and Glycolic Acid are often used in conjunction with Benzoyl Peroxide to treat severe acne. Salicylic Acid and Glycolic acids gently exfoliate the skin and increase skin cell turnover, allowing benzoyl peroxide treat the skin more effectively.

Benzoyl peroxide can potentially damage the skin's natural barrier function, and deplete antioxidant and moisture content by oxidizing fats from the skin. This is what causes dryness and inflammation. To neutralize this effect, it's recommend to follow up BPO with a moisturizer - even for oily skin!) or use a formulation with skin soothing ingredients like the Acne Clear Serum and Acne Clear Pads.

Side effects of traditional benzoyl peroxide include redness, dry, flaky or itchy skin and mild irritation. These side effects usually subside within a week or so, once your skin has adjusted to the BPO. If you experience irritation, you may want to use BPO once a day or every other day to allow your skin to adjust, or use products formulated with micronized BPO that do not cause irritation. Be mindful of getting dressed while using Benzoyl Peroxide, as it can bleach clothes, towels and pillow cases.

Once you've cleared your acne with Benzoyl Peroxide, you still need to use it as a maintenance measure. BPO is only effective because it kills the bacteria that causes acne. If you stop using Benzoyl Peroxide, then the bacteria will come back - along with breakouts.

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