Anyone using both Retin-A (tretinoin) and benzoyl peroxide to treat acne has to do double duty -- applying Retin-A in the morning and benzoyl peroxide at night. Using benzoyl peroxide at the same time inactivates Retin-A, making it ineffective.
A new study published in this month's issue of the Journal of Drugs in Dermatology shows that the Retin-A Micro Pump can be effective even when applied along with benzoyl peroxide.
This is good news if you'd rather not have to split up your acne treatments. But, as our About.com Guide to Dermatology reports, your insurance company might not pay for this more expensive option, even if it means less hassle for you.
Do you think the ability to use both Retin-A and benzoyl peroxide at the same time make it easier for people to stick with their acne treatment? Or is splitting treatments into morning and night applications not a big deal? Take the poll.
Source: Parser D, Bucko A, Fried R, et. al. "Tretinoin Gel Microsphere Pump 0.04% Plus 5% Benzoyl Peroxide Wash for Treatment of Acne Vulgaris: Morning/Morning Regimen Is as Effective and Safe as Morning/Evening Regimen." Journal of Drugs in Dermatology, 2010; 9(7):805.