Methods provide for measuring moisture content of skin, such as the scalp. More particularly, the present invention is directed to a method comprising the steps of: (a) providing a means for measuring skin moisture content; (b) using said means for measuring skin moisture content to obtain at least two measured moisture content values from skin; (c) comparing said at least two measured moisture content values with each other to obtain a measured moisture content differential; and (d) correlating said measured moisture content differential to a skin moisture value for said skin.