Free Octane Subsurface Scattering shaders I created while working on a personal project entitled "Inside". You can view here http://www.behance.net/therustedpixel
Please note, this is the first time I've experimented with SSS and I'm not much of a render artist so some of the nodes and projections may need tweaking.
Also, I strongly recommend you watch Raphael Rau's "Silverwing Training: Subsurface Scattering for Octane" tutorial on Vimeo. Raphael explains, in a very easy to follow manner, what scattering is and how to adjust the nodes to best suit your needs. Here's the link https://vimeo.com/234034058