once the muscle is injected the fat slowly dissolves and some of it gets stuck inbetween the muscle fibers for a long time months maybe even years.It was once used to help add say a half inch to a lagging body part ,get a peak on a bicep,get a rear delt to swell up. Used for that purpose its no different then some one pumping a muscle area with say 6 cc's of equipose at 50mg per cc no real steroid dosage but the main effect is the hard lump for a few days before a show.
used poperly to "enhance" already well devolped bodies it can be very impressive to see a split double peaked bicep with synthol such as ronnie colemans bicep.On the down side if its over used it looks silly and takes away from the muscle true shape and can make it look deformed
should only be used by a top pro that has a top pro body but looking to fine tune a few areas before a show that could bring home a $250,000 paycheck so they have to do anything and everything to win.