[americansupercarinc]

There is a product called Black beauty it is ground up coal
works great.Yes if you take it to someone with no experence they will worp it. A good experenced blaster will do a great job,the up side to black beauty is you dont have to sand the car after for adhesion to seal. With media it gets it so smooth you then have to sand the intire car before sealing.and unlike sand it does not hold moisture
I have been useing it for 30 yrs with no problem,and I have tryed them all for what thats worth