After a patrol, an ex-Puser diesel submariner mate, David, used to get his Missus - well, she insisted before letting him into bed, actually - to scrub him all over with Vim or Ajax and a nail brush (not made of nails! for cleaning finger nails) which opened the pores, destroyed and emptied pustules as well as generally degreasing him and taking away some of the diesel smell. In-grown hair stood not a chance!
George F, 4th Engineer, had a donkey boiler blow-back. Prior to this event, his face was a pimpled and spotty mess. After we removed the bandages, his head and face were without blemish and he even had a little hair showing through. This method of skin cleansing should be considered as highly dangerous, however.