Babe Fusion Extensions 18 Inch Dottie #12 20 Pieces 100% Human Remy Hair This tried-and-true technique involves connecting extensions to hair with keratin bonds. The same keratin protein that your hair is made of! Each extension strand comes pre-tipped, with the keratin bond ready to go. Each strand is individually attached for 360-degree movement and ultimate styling potential. Application time: 2 to 3 hours. Maybe reused up to 3 times (with Rebonds). Lasts 2 to 4 months with proper care. New without tags never used #a1