[Review] Benzoyl Peroxide or Cutacnyl in France

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In France, Benzoyl Peroxide is the dermatologists’ favorite product for acne. But it is not suitable for everyone. In France, Benzoyl Peroxide is available under prescription and is sold under the brand name Cutacnyl. In concentrations of 2.5%, 5% or 10%. A higher concentration does not mean more effectiveness but rather more irritation. In general, dermatologists prescribe the 5% concentration.

In the United States, Benzoyl Peroxide is available over the counter, as is Differin, another product that is much too prescribed by French dermatologists (cf. my detailed reviews here)

When you should use Cutacnyl

This product is very effective when there is an area of acne that is starting to spread. It kills the p.acnes bacteria. Thus, the acne area will not spread any further. It is an excellent product when you don’t have access to antibiotics because it stops the spread immediately. It is to be used locally on pimples. Moreover, it should not be used during the day because of its photosensitizing effect

When you shouldn’t use Cutacnyl

However, the deep-seated pimples will not have time to “come to the surface,” so they will stay there for many months, like a stain. So if you use it on cystic pimples, which hurt, which have no head, well hidden under the skin, they will stay there for several months. They won’t hurt anymore, but they will be like hard red little balls that you can’t get rid of. But it will eventually go away after a few months. This product stains colored clothing, so it is best to wear white and use white bed sheets when using it.


If you have a significant spreading acne area, you can use it in “express cure” mode for a few days only on the acne area.
While using Cutacnyl, you should moisturize your skin more and drink a lot of water: you can find the moisturizing products and my complete acne routine here.

This post is also available in: Français

Anh est toujours très occupée à profiter de jolies choses, et à fabriquer de petites bricoles de ses propres mains. **** Hi, my name is Anh. I am a Vietnamese-French DIY passionate, beauty lover and cosmetic tester.

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