This product was upgraded with the same rig setup than the IK Female version model. This means that the forearm bone (circular arrows) will follow the hand rotation. From here you have all you need to build your forearm without twisting problems.

Feel free to write me if you need help with this process.

Now to the Documentation:

This product contains:

File 1: "Skin ARZVEL HANDS" .png image 2160p size 35.3 Kb

File 2: "Female Hands by Arzvel" .blend file size 6.3 Mb