B.C.
Soap and water by itself won't remove physical sunscreen.
The recommendation is to use an oil based cleaner and a scrub to help get it all off.
http://www.youbeauty.com/skin/theres-a-right-way-to-remov...
If you need some sort of oil to remove it, try coconut or olive oil, then wash up with soap and water after that.
Additional:
Fuzzy - here are the differences:
http://www.skinacea.com/sunscreen/physical-vs-chemical-su...