This is one of the major factors in determining the cost of your remy human hair extensions. There a lots of different types of hair that can be used and some are more expensive than others. Human hair extensions are the most expensive type of extension, but withinbrazilian hair extensions there are levels of quality. There is clip in hair extensions that is a very good quality of hair which means that all the cuticles are uni-directional. There is virgin hair extensions meaning that the hair has never been chemically processed. One of the most expensive type of hair available is Virgin Remy Human Hair. This is hair that has never been permed, dyed, highlighted, or otherwise chemically processed. The beauty of this type of hair is that the cuticles are all intact and are unidirectional. Having the cuticles in tact allow it to last longer. Having the cuticles all facing the same remy human hair extensions reduces the risk of matting and tangling.