themehelper.dll is a Visual Styler Theme Helper
belonging to AusLogics Theme Helper
from AusLogics, Inc.
Non-system processes like themehelper.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues