[Skin Concerns] Skin is constantly oily yet overly dry and flaky. What do I do?

Beauty Tips For Body Care
I'm near my wits end. My skin just never seems to look good no matter what I do.A few years ago I was on a course of accutane, that more or less cured my acne, however, it left my entire body with dry, flaky skin (literally head to toe).My face isn't 'visibly' flaky, as I moisturise it after I shower/when I need to etc. but it's always very oily, and every few days I can use a cloth and wipe my nose/forehead and off comes skin. Literally a layer.I drink 3+ liters of water a day. I take fish oil. I eat fresh fruit and vegetables, and my sugar intake is fairly low, compared to what it used to be like.All I do currently is wash with cetaphil morning/night and moisturise afterwards. If I don't moisturise, my face remains dry. But so far nothing is working. Most products irritate my face.Should I be using an exfoliant? I have no idea anymore. Any advice is appreciated.
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Submitted by no_life_liam