I agree with what MAF suggests. The main thing is to get a grease free body to work on and washing-up liquid will do the job. Becareful how you handle after cleaning as your fingers are naturally greasy, you don't want to have to keep redoing the job.
At the moment I'm using Halford's clear coat to protect completed bodies and have had no problems with that or any of the Halford's acryics range.