Finished the male moustache today - adjusted the scale in certain places where in my previous render you could see that the hair was far from the face, this happened because i couldn't figure out why i kept getting black faces and thought it was going into the human, so i pulled it further out. Then i figured out that it has to do with blenders light paths and this needed to be set higher in order to get a clean render and had nothing to do with the proximity of the skin, so i pushed it back.
then once again there is a black and white mustachetrans.png - this is the image i use as the factor for transparent node even though the diffuse texture is made with an alpha channel - the alpha channel pixelates as it meets the texture, so to get a clean transparent use the supplied black and white png.
oh and dont forget to adjust the lightpath transparency to about 20 for min and max - found under the render tab. or it will look like black squares.