A method of producing a lip cosmetic, comprising the steps of: (i) mixing an oligomer (ingredient (a)) produced from behenic acid, eicosane diacid, and a glycerin condensate, a polyol (ingredient (b)), and water (ingredient (c)) to prepare a solution containing ingredients (a), (b), and (c); (ii) mixing an ester oil (ingredient (d)) composed of a carboxylic acid having 2 to 36 carbon atoms and an alcohol having 1 to 36 carbon atoms, being in a liquid or paste form at ordinary temperature, and having a viscosity of 300 mPa·s or more at 25° C. and an oligomer (ingredient (e)) produced from behenic acid, eicosane diacid, and glycerin to prepare a solution containing ingredients (d) and (e); and (iii) mixing the solution containing the ingredients (a), (b), and (c) and the solution containing the ingredients (d) and (e).