Hi Michael, thank you for your reply.

The hair texture were all set to quality. I´ve set them to none but the hair doesn´t look any better.

I think i should try to make some new hair textures with finer strands for "Loose Hair". But i never done this before (creating new textures and bumb maps...)

And i´ve also found some nice hair files on the marketplace:

http://www.renderosity.com/mod/bcs/index.php?ViewProduct=86047

http://www.renderosity.com/mod/bcs/index.php?ViewProduct=69898

http://www.renderosity.com/mod/bcs/index.php?ViewProduct=83816