It is an object of the present invention to provide a hair nourishing cosmetic which allows an antioxidative action of ubiquinone to contribute to hair nourishment. The hair nourishing cosmetic of the present invention comprises a ubiquinone derivative represented by the following formula (1) and/or its salt, wherein R 1 and R 2 are each independently a hydrogen atom or a phosphoric acid group, at least one of R 1 and R 2 is a phosphoric acid group and n is an integer of 1 to 9.
