To provide a non-aqueous hair cosmetic that has excellent transparency, straightens hair, exhibits excellent straight-retaining force, protects the hair from heat of a straightening iron and imparts natural gloss and excellent pliancy to the hair.

The hair cosmetic comprises (A) dimethiconol, (B) a block-copolymerized poly(oxyethylene/oxypropylene)/alkylene/methylpolysiloxane copolymer, (C) a volatile silicone, and (D) a vegetable oil.