During that period, arena rock evolved in a way that was still melodic and performance-driven yet far more aggressive and confrontational. Mainstream rock became dominated by these hair metal (also known as "glam metal" and "pop metal") bands, with a large emphasis still being put on both on music and visuals. Flashy clothing with elements such as heavy makeup and dramatic hairstyles became common. Prominent examples of this genre include Def Leppard, L.A. Guns, Mötley Crüe, and Poison. Their popularity crashed after the success of alternative rock bands who began to break through into popular consciousness with an even more abrasive sound, particularly artists influenced by the success of Nirvana in the early 1990s.