only good if ur using short esters needing freq inj's. esp since some pro ps and short esters tend to sting. some like to go with delts, glutes, pecs, tri's, quads. those are some reg spots for a few peeps I know.
no--just look bigger for a few days--and weird if you use too much or get major elbow pain if you get a lot outside the lower part of the belly of the muscle
not at all bro. i guess that was what u were asking i just wanted to make sure like i said it is temporary. everyone that claims it is permanent needs to look at their ass where most everyone injects. we all would have huge asses!!!