I'm not an expert, just speaking from my similar experiences. It might help to use a glycolic acid that is milder than your mask, on a daily or every other day basis, as an exfoliant. I would do it in the morning, not at the same time as Retin A.
There are some ingredients that are found in skin products that you could be reacting to. I mean like fragrance, or peppermint oil. The Cosmetics Cop's website is great for listing these. Try eliminating some of those and see if it makes a difference.
It could be seborrheic dermatitis. You gotta see a doctor to have that diagnosed and treated.
You could also ask your doctor if it is an effect of the Accutane, and what to do about that.
I hope I have been helpful. I'm sure others will have other suggestions for you to consider.
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