If it's the one I think you're looking for, If you go to Darkworld's Poses and look under the editorial tab he tells you that it is Kouros hair by SAV, whom we miss so much:

https://www.renderosity.com/mod/bcs/dark-romance/90545

Dark Prince:

Atlas character and texture, from Rosity

Kouros Hair, from Rosity

M4 Pirate outfit, from DAZ

https://www.renderosity.com/mod/bcs/kouros-hair/89981/