Thanks. 

I got a reply from SM in the meantime that points out that all hair props have a Actor.InternalName() that starts with "figureHair". Sometimes the solution stares you in the face :)

Paolo

https://www.preta3d.com
FB: https://www.facebook.com/RealityPlugIn
Tw: @preta3d
G+: https://plus.google.com/106625816153304163119
The Reality Gallery: https://reality-plug-in.deviantart.com