A leave-on type hair cosmetic composition having the following two layers A and B: Layer A of an oil layer containing the following component (a) in an amount of 0.5-40% by mass in the hair cosmetic composition, (a) a highly polymerized silicone selected from dimethicone and dimethiconol and having a number average degree of polymerization of 1,000-20,000； and Layer B of a water layer containing the following components (b) and (c), (b) a water-soluble polymeric thickening agent, and (c) water.
