Disclosed herein are novel devices for the organization and treatment of hair extensions. Devices incorporating features of the present disclosure include objects that can securely hold one or more hair extensions and organize them such that a hairstylist can easily keep track of the various hair extensions and where they are to be placed into a client's existing hair. In some embodiments, the devices comprise a shape similar to that of the human head, providing a convenient visual cue as to the intended placement of a connected hair extension to a client's existing hair. Devices according to the present disclosure can also comprise various connection structures for further securing and organization of connected hair extensions.