https://i.ytimg.com/vi/1O_CpIFeiPQ/hqdefault.jpg Surface Comb operator in Ornatrix V4 can be used to define and control strand data using surface sinks. In this tutorial we learn how to use this functionality to control surface-varying frizz and length values of hair. More info: https://ephere.com/plugins/autodesk/maya/ornatrix/ source