Heat it up with the hair dryer then spray a can of compressed air upside down on it. The sudden change in temp from hot to cold sometimes will constrict the metal and the dent will "pop" itself out.
YouTube has a ton of vids showing people that have done it.
Ask and see if the place you were at has security cameras? i dont know if the hair dryer and compressed air will work because it looks like its creased
hahaha he did paint my bumpers did decent i gotta do somemore stuff to ole bruce... i need to get my paint corrected bad but dont know how