My oily skin is back after increasing accutane dose! Why is my face so glowing?

I started 10 mg of accutane for sebum reduction and have been on that dose for tge first 4 weeks. My oily skin improved dramatically and actually became so dry. My dermatologist upgraded my dose to 20 mg in the second month to reduce the chance of recurrence. Surprisingly my oily skin came back as soon as i increased the dose! Plus, my face is weirdly glowing. I really can't understand what is going on. Thankyou!

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