If you are looking for community-created or trial-based "free" options: FREE SKIN SMOOTH FILTER & PLUGIN DOWNLOAD NOW
While there isn't a single official "one-click" free plugin from Grass Valley, you can achieve professional skin smoothing in EDIUS using either native filter "hacks" or by leveraging trial versions of industry-standard plugins. Top Skin Smoothing Options for EDIUS NewBlue "Skin Touch Up" (Integrated): edius skin smooth filter plugin free download now link