 Regarding treatment satisfaction of those patients who were administered with botulinum toxin product, onset time plays an important role as a factor. Limitation found when reviewing the existing publications was in defining onset time solely on the determination of effect simply on response to whether there was an improvement. However, this study defines improvement rate of glabellar lines as ratio of reduction of more than 1 point from the baseline by investigator and thus it appears more objective data can be obtained than existing studies. Therefore, with this background, we intend to conduct phase 4 clinical study to explore onset time for DWP450-004 injections glabellar lines improvement effect. 