Since this is a “Cycles bug” thread i am not sure if it should go here or in materials and textures. So I will just roll the dice and put it here
At first i rendered the finished file that was included with the tutorial. After seeing this weird effect in the hair render I broke down Kent’s shader to see what was causing the problem. Apparently it was the hair node when set to reflection. This seems like a pretty major bug. I don’t think that it is anything that I am doing because this effect remains whether it is rendered from the source file or after I followed the tutorial and made my own.
Is there a work around for this?
Edit: Oh… and the effect does not appear in preview mode. I can set the preview to 2000 samples and get a clear image. When I do, this anomaly is clearly not there. It only is visible after I hit F12.