Hair Strand Designer is a tool by Robert Ramsay that creates hair strands in the form of 4k texture maps ready for placing onto hair cards.
Strand Designer is also said to create a Color Map, Normal Map, Depth Map, ID Map and Mask Map. Users get control of waviness, tapering, scale, variation, coloring, spacing, thickness, length and number of strands in 8 possible sets.
There’s a Polycount forum topic for more details here.
Functions: F1 – “View/Enter custom seed value (Randomization ON creates a new seed number, enter your own seed number then disable Randomization, then click generate to see your own seed value represented).
Once generated, save out your maps and recombine them however you like in Photoshop/Gimp.”