A note about Fiber Hair, brows and lashes in specific.  I've mentioned that fiber hair looks like crap in the Carrara native renderer, but I'm changing my tune on that.  They ca look a bit more presentable in you change some of the render settings in the render room.  In this example I used the G8F preset (Veronica for G8F by Misty) with the Lashes and brows merged into the figure, using Colm Jacksons Lashes and Brows.  The important setting is the AntiAliasing set at its highest.  Native render compared to Octane.