A visible nasal hump best seen on profile view is called a dorsal hump.  If it is small and you have a depression in the upper portion of your dorsum (called the radix), sometimes an injectable filler could improve your profile temporarily.  The fillers I use last approximately one year, but I very rarely use them for nasal contouring.  This would be only a temporary fix.  Surgery is the standard of care for correction of a dorsal hump.