If you have acne prone sensitive skin, you should not be using any abrasives or exfoliants. It sounds backwards, but this actually hurts more than it helps. It makes sensitive skin more reactive and prevents it from healing. I would lay off the microdermabrasion and clarisonic until you get the acne under control. I would also simplify your routine as much as possible and lose the clay mask. It took my skin about 3 weeks to adjust to oil cleansing, so I hope you see results soon! I also added aloe vera juice as a toner and that helped immensly. You can buy pure aloe vera juice at health food stores, the stuff for sun burns has too much alcohol for your face. I also wonder if the serum is causing you problems, but I am not familiar with that particular product, I just know that serums tend to be thick and may not be allowing your skin to breath. Good luck!