When Satine is dying in Christian's arms at the end of the movie, if you focus on her eyebrows you'll notice something. One second they are exceedingly long, but in the next cut they are normal length, then they 'grow' back to full length. Magic growth cream? I think not. More like bad editing...
Well... I have never held a dead person or been near one, but I remember when we had to put my poor dog to sleep that his body convulsed after he died. Something about muscles relaxing or something. And while we know that Nicole didn't actually die, Satine's 'blink' could easilly be explained as something like what happened with my dog.
No she doesn't blink at all! Watch it again and this time focus on her eyelashes, you will see a light reflected on to them. When Satine has 'died', Christian moves her ever so slightly and so the reflection of the light makes it look like she blinks. As for the eyebrows, who cares?!