[PROBLEMS] To provide a composition for external use which is free from dilution or concentration of a drug component even in the case of being packed in a container of an open system and can show a favorable texture in repeated use. [MEANS FOR SOLVING PROBLEMS] A composition for external use comprising (A) a drug component, (B) a powdery component, (C) a polymer and (D) a solvent, which is to be packed in a device for applying a drug solution comprising a container section for containing the composition, an opening for connecting the container section to the outside, and an application section having a number of brush bristles that are provided so as to cover the opening as described above.
