Carodan, the first one is kates hair piece. the second one, is the dynamic hair piece of Jessi. I changed it a bit, yanked up the hairs and also the vert count( between 45-80) and used on the roots a dark brown, and a much lighter one( in the same color scheme) on the tips. For the hair on the top i used a lighter brown than the hair underneath it. It works great with blonde hair too.

 

For rendering i used IDL with an HDRI light, just 2 simple lights thats all. Ive set the idl to 8. You can set it higher, but the calculating will take much longer then with almost same results. It's not the rendering that takes a long time at all, its only the calculation of the idl on the hair.