Provided is a method for treating hair damage by contacting the hair with an effective amount of an epoxysilicone. The method may be used for treating hair damage caused by a hair altering process that is capable of damaging hair, for example, hair lightening/bleaching procedures, hair relaxing procedures, hair dyeing procedures, hair permanent waving, and hair smooting. Also provided is a composition and a product, which include a hair damage treating effective amount of the epoxysilicone.