Sounds like you just have the bump map level set too high. Try single-pixel sized noise on a map 2000x2000 and set the bumpmap level to around 10-20% in the surface materials box. The effect also depends on how close your figure is to the camera. Should get something like this. This image is from a new skin texture WIP. This one had the level set at 20% on the skin (perhaps a little too high still) and 100% on the nipples. Skin highlight value was 44 and nipple highlight was 244.