Patent ID: 6918138

Claim:
A device for cleaning a person's hair, comprising: an outer cap having a water impervious outer surface and sized to fit over the hair of a person; a liner positioned inside said outer cap, said liner having a fibrous texture and being sized to contact the hair of the person; a quantity of hair cleaning compound in said liner; and a heat source, said heat source comprising a frangible container containing a quantity of supercooled liquid capable of releasing a predetermined amount of heat upon crystallization and a quantity of the crystal form of said liquid separated from said supercooled liquid selected from the group consisting of sodium carbonate and sodium acetate and present in an amount sufficient to initiate crystallization of said quantity of supercooled liquid upon flexing said frangible container to cause said crystal to contact at least a portion of said supercooled liquid; and a temperature sensitive portion on said cap to indicate the temperature of the cap after breaking said frangible container; wherein said crystallization causes the temperature of the solidifying liquid to reach a controlled temperature of up to 130° F. and said hair cleaning compound is in contact with the user's hair.