Heat activated form fitting hair cap

A heat activated form fitting hair cap for substantially sealing an area of a body having hair from the environment, comprising:

• a heat activated shrinkable body having at least one layer of material having a thickness of between approximately 0.25 mil and approximately 8 mil, a distal edge, an inner surface, and an outer surface;
• the heat activated shrinkable body wherein the material of the heat activated shrinkable body is chosen from the group consisting essentially of films consisting of PVC, polyolefin, polyethylene, polyester, nylon, and saran;
• formed to define an open interior volume bounded by the distal edge and generally sized to receive a portion of a human head and to shrink to conform to the shape of the head when activated by exposure to a heat source thereby creating a substantially liquid-tight seal between the distal edge and the body substantially sealing the portion of the body within the interior volume from, the environment;
• the heat source producing a first predetermined activation temperature between approximately 100 degrees Fahrenheit and 140 degrees Fahrenheit on the outer surface of the heat activated shrinkable body;
• at least one cap retention means located substantially near the distal edge and thereby ensuring the distal edge substantially conforms to the head prior to activation;
• wherein the material of the heat activated shrinkable body is substantially moisture resistant and substantially gas impermeable;
• and
• the material of the heat activated shrinkable body further having a shrinkage rate between approximately 20 percent and approximately 85 percent.