The hair, or glam, metal bands of the 1980s remain one of the true guilty pleasures in music history. The hair spray, makeup, and catchy pop tunes touched up with distortion were made for MTV. Though there really wasn't much substance to the music, the scene was popular to the mainstream. We've decided to rank our 20 hair metal bands of all time. But before we go on, bands like Def Leppard, Kiss, Scorpions, Whitesnake, Extreme, and Tesla are not on this list. While, yes, some of these groups…
