Black Remy Wavy Single Donor Human Hair Extension (24 Inch 。Single-donor, hands down are the best virgin hair extensions. As the name suggest, the hair from each bundles comes from one person. Which means all the cuticles are in one direction and the most SIGNIFICANT difference is the fullness and density from top to bottom. Look at the pictures closely, and you can see how full it is and there\'s very small amount of short hair. If properly maintained, you can easily use and reuse it for years to come. Each bundle are hand selected to meet our standards.