PROBLEM TO BE SOLVED: To provide a quick-drying hair oil which is applied to the hair wet for a shampoo or the like to shorten the time for hair drying.SOLUTION: The present invention provides a quick-drying hair oil comprising at least one or more volatile oil selected from isoparaffin hydrocarbon (where n=1-4) represented by the following formula (I) and alkane hydrocarbon (where m=12-14) represented by the following formula (II), wherein the formula (II) is: CH.