Can I use my benzoyl peroxide after dermapen?

At Bridgetown Aesthetics, we advise all of our microneedling patients to discontinue use of Retinoid cream, physical exfoliants and acidic products that may be drying or irritating to your skin. Products well-known among those with acne-prone skin types such as AHA/BHA, salicylic acids, and benzoyl peroxide are also harmful after micro-needling.
We suggest waiting 3-5 days after your microneedling treatment to avoid irritation, faster healing, and better overall results. 

You must be very careful to use only serums that are specifically made to be safely used together with microneedling as these treatments enhance penetration into the skin of topically applied serums. In my office, we do our micro-needling treatments using the ProCell Therapies system. Growth factor serums produced from human stem cells have been shown to be the most effective in the skin, and ProCell Therapies' growth factor serums are made from human stem cells that are derived from bone marrow. Studies have shown these growth factors to be highly effective in the skin and are much more "anti-inflammatory" than growth factors derived from other cell types.