A composition and method of use therefore that allows for permanent straightening or curling of human hair that is not irritating to the skin, that allows for the immediate shampooing of hair thereafter and that provides for re-treatment of the hair without additional damage. The composition primarily uses dimethyl sulfone (MSM) and high temperatures to break and reform disulfide bonds as a means to allow for the penetration of low molecular weight proteins into the shaft of the hair. When curling the hair, it is understood that devices that will stretch hairs into curls at the temperatures expressed in the scope of the patent will produce a permanent curled hair. A test curl will indicate the heat and temperature required to permanently curl the hair being treated.
