Dupli-Color - Grease And Wax Remover

As Don says above, I find a mild detergent/water mix works fine, or lighter-fuel for resin parts if they feel waxy or greasy

Yes, I have used it.  However, I was pretty worried about using it so I really hurried to wipe it on and get it off.  I generally do NOT use it.  I find a mild detergent/water mix works fine for most plastic kits.  Sometimes to ensure I have gotten all the detergent off I will use a bit of denatured alcohol afterwards.  Or, sometimes if I suspect too much finger oil or mold release I will just use the alcohol.  If for some reason I suspect wax on the plastic, that is when I may resort to the degreaser/dewaxer.