I own this product, and Selene Hair's zip file is structured properly. All you need to do is unzip to the folder containing your runtime... just as the case with pretty much every Poser product available here.

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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