A cosmetic or therapeutic mask retainer which is thermoformable so as to allow the facemask to remain in position on a user's face when in use. Specifically, the present invention relates to a multi-layered retainer for therapeutic or cosmetic purposes comprising a gelatinous elastomer layer, optional internal fabric layer, a thermoformable plastic layer, and a fabric strap layer. The thermoformable plastic is preferably a plastic that can be heated to temperatures that allow it to be molded but also so that human skin can withstand the heat, such as EVA or PCL. The facemask can be one, two, three, or four components when in use and may be formed by creating a variety of composites between the various layers.