Is 20 mg a week Accutane enough to stop oily skin? If so, how long would it take for results to become evident?

This is an untraditional, yet viable
route to combat oily skin. Even 10 milligrams every day for this off-label
indication would do just fine. With ten milligrams a day of Isotretinoin, you will
be able to decrease sebum production, leading to a less oily complexion.

There are no specific
recommendations for monitoring blood work using this low dose for an extended
period of time. Some additional risks, such as bony problems, can result in bone weakness and hyperostosis,
when using the medicine for a long-term.

However, we have done this on some
occasions for patients who have recalcitrant, oily skin. Expect results to become evident within a
month. When the duration of the prescription is complete, there are additional
ways to topically combat oily skin like high potency, topical retinoids.

No, it's not enough unless you are taking it as a maintenance regimen, meaning you've already had a full regimen of taking it daily. "This answer has been solicited without seeing this patient and
cannot be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."