If your face has started to clear up since you've been on Atkins, I'd certainly put any treatment on hold and see where you get to, just naturally.
Loads of people report improved skin conditions since starting Atkins, so this might just be the answer to your problem. I really hope so!
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Before and after:
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PLEDGING FLIGHTS Completed: 1st set of buildings and mountains (Everest twice); Tower Masts & Chimneys; More virtual buildings; Challenger's Choice x 2 (volcanos and mountains on Mars) Currently re-climbing Mont Blanc: 1581/2028
Start 10 Jan 2005. Maintenance since Aug. 2005.
F/55yrs/5'.4"
SW:77.7 LW:56.5 CW:60.1 GW:57.7 (kilos) gone just beyond my buffer zone lately. Grrrr! Working on it.