Thanks, guys. I still think that there's subtle reflection & spec that could improve this, but it's beyond not only my understanding of the material room but probably also the rendering power of my computer.

Here's a lighter blonde. I also did a more golden blonde, but it's not as realistic IMO. To be honest, I think most people assume that hair is more saturated than it really is in most cases.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3