Just Tried Out UHT Iray Hair Shaders
https://www.daz3d.com/uht-hair-shaders-for-iray
I picked this up on sale in August and spent some time this evening trying it out--and I love it! I used Micah Hair and Marielle Hair, both Genesis, and XOXO Hair (OOT, Rendo) for V4. (Excuse the posing on that last, was a fast job & not the focus of the exercise.) Environment is Dome Only, per the Read Me instructions for no scene lights. This was really as easy to use as advertised! I just applied a similar texture for the original hair close to the shade I wanted, then applied the UHT shader and rendered. XOXO had mix and streak options, so I applied blonde streaking in the front zones before applying 2 UHT shaders to the respective zones.
Thanks SloshWerks!

Comments
Check out the included 'Utilities' folder, too: for tiling, shine, etc.
I use this product in almost every render, on all kinds of hair (including eyelashes, brows, animal fur, tails, etc).
I plan to. This was just my first time playing with it.
UHT is awesome! check out Colorwerks and Colorwerks Extreme, even better than UHT ( both by the same author, Sloshwerks
)
I took a fairly in-depth look at ColorWerks Extreme in my MMX and Sloshwerks SBH shaders thread. Slosh keeps getting better with each new product release.
I have the other products in my wishlist. This one was on a very good sale (& I may have had a coupon), so I decided to try it, to see if I liked it enough to get the others. Yes, I did. Now if my budget & Daz's sales would just play nicely together for a change...
@JonnyRay: I did read that thread and it did encourage me to take advantage of that sales price. And I may well give the MMX a try, too.