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If your Derm has given you the all clear, then I guess it should be fine.

I have sensitive skin so I use sunscreens that contain physical UV blockers (namely: Titanium Dioxide and Zinc Oxide) such as Blue Lizard brand sunblock; sunscreen with physical UV blockers doesn't irritate skin the way sunscreen containing chemical UV-blockers does, but it can also cause breakouts for folks who are prone to them. Also, the titanium dioxide and zinc oxide (even when "micronized") tend to leave a white, ashy cast on the skin.

Chemical UV-blocker based sunscreens don't usually have the above problems, but can often be far more irritating to the skin than the physical-blocker variety.