The short answer: Human Hair, Virgin Hair, and Remy Hair are all cut from a real person’s head. “Human Hair” is processed and chemically altered to perform a certain way or to be a certain color. “Virgin” hair is is completely natural and unprocessed and “Remy” means that all the cuticles of the hair are going in the same direction which makes it the most natural hair. Synthetic hair is made from synthetic fibers which range from realistic to plastic looking depending on the quality. Wool dreadlock extensions are typically very colorful and unrealistic, they are typically used temporarily to adorn your current dreadlocks.