similar to mentioned earlier by elli... duplicated the layer, guassian blurred the top one, adjusted "luminosity" on the blurred layer depending on how much of the original layer i want to show through... then on that blured layer i just quickly erased such areas as the eyes, hair, lips, bit of the nose. so that the original layer shows through.
i used a feathered eraser so i didnt get any hard eraser "edges"
really didnt take long at all, few mins max.
cheers, matt.