Number of Materials Import Blender Unity

Hello,

I have imported a character from Blender to Unity .

In Blender it has 3 Materials clothMat, skinMat, hairMat ; each with 2 Textures.

(For skin and cloth diff and normal tex for hair a diff and a alpha texture)

Imported in Unity I got 7 Materials (see Picture) and I have to use all of them to get a complete textured model. Is there a way to fix this, so I get just the materials I use in Blender?

(Btw I used the .fbx, too, but there I got strange results)

Greetings Andy