Its hard for us to imagine iconic beauties, such as Beyoncé, Jennifer Lopez, Gwen Stefani or Selena Gomez, appear on-stage or walk the red carpet without a full face of makeup or a luscious head of hair. “Hair extensions are so ubiquitous in Hollywood these days, it’s almost more shocking when somebody doesn’t wear them,” says Glamour, “It’s like spotting a unicorn in the wild—still with an incredible mane, of course, because these are celebrities we’re talking about.” Hair integration, more commonly known as hair extensions, adds length and fullness to human hair. Extensions can be sewn in, bonded, braided or clipped in. and are made from artificial hair or natural hair collected from other individuals. But did you ever wonder where this natural hair came from?