i get asked a lot about extensions. great lengths was the first company i became certified to do extenstions with. that was about ten years ago. since then i have become certified by many other companies because i didnt want to be closed minded about what other methods and brands of extensions were out there. after all the classes and all the years, i still believe great lengths are the best. the hair is the best quality and thier bonding system is, in my opinion, the best. they are coming out with some new great products as well. i recently became certified to use the "ultrasonic 5000" which does the "cold fusion method" i think both methods are great. if you want more info, come in for a free consult and we can chat :)