The invention relates to a system and method for extending and/or thickening natural or artificial hair, comprising: additional material suitable to be connected to said natural or artificial hair, which comprises animal hair and/or structurally-modified synthetic fibers, and an adhesive material；.La invención se refiere a un sistema y método para alargar y/o engrosar pelo natural o artificial, que comprende: material adicional adecuadamente para conectarse a dicho pelo natural o artificial, que comprende pelo de animal y/o fibras sintéticas estructuralmente modificadas, y un material adhesivo.
