Provided is a method for forming a coating comprising fibers having an excellent adhesivity to the skin, comprising directly electrostatically spraying on the skin.A method for producing a coating comprising fibers on the surface of skin or nail, comprising directly electrostatically spraying onto human skin or nail, composition A comprising the following components (a), (b) and (c) :(a) one or more volatile substances selected from the group consisting of an alcohol and a ketone,(b) a water-insoluble polymer for fiber formation,(c) 0.2 mass% or more and 25 mass% or less of water；wherein the mass ratio of component (b) to component (c), ((b)/(c)) is of 0.4 or more and 50 or less.
