The purpose of the present invention is to provide a keratin fiber treatment composition that is capable of retaining the shape (style) of keratin fibers over an extended period of time and that also has an exceptional feel on use. The present invention pertains to a keratin fiber treatment composition characterized by containing a sugar alcohol. This keratin fiber treatment composition preferably also contains one or both urea and/or a urea derivative or a hair-styling resin. The pH of this keratin fiber treatment composition is preferably within the range of 4.0-7.5.
