Glam Metal, or Hair Metal is a sub-genre of Heavy Metal music that arose around the late 1970s and early 1980s in the United States. Glam grew to be the a dominant genre in popular rock music throughout the 1980s and briefly in the early 1990s.
The genre was also referred to, often by detractors, as hair metal. This term was popularized by MTV in the 1990s and derives from the tendency amongst most bands to style their long hair in a feminine tendency, or to style everything in a "Glamourous" way. There is also, of course, Glam Metal's close cousin, Glam Rock, subtly different to Glam Metal, plus a certain amount of crossover with The New Wave of British Heavy Metal.
The genre has enjoyed revivals since the beginning of the new millennium, with a lot of new bands out of Sweden and Finland as well as the US and UK.
Some bands that typified this style would have been;-