Thank you very much, FightingWolf. 

That was a precious hint. I have this hair, but have forgotten this, 'cause it's for A3. 

It works wonderful on V4 and has a lot of morphs -- very nice. 

The red color is not in the MATs and I've made the texture by myself just as I had to alter the texture of the Tenshi outfit to the Pink-Latex. 

WandW shows a way to get this hair for free, it's a really good idea to catch it. 

Thanks again for your help! 

Henning