I have never had a problem with hair loss. I'm currently on day 16 of my third MC, and so far have only had the usual detox symptoms.
When I did my first MC I did it for 20 days, needed to loose a lot of pounds. After 20 days I lost only about 10 pounds (and many inches everywhere!) but I didn't get discouraged and became a very relaxed vegetarian (I eat mostly vegetarian but if I feel like meat, chicken, or fish I eat it). I kept on loosing weight, never regained any of the lost pounds during the MC.
I also bought a great book called "Eat to live" (by Joel Fuhrman and Mehmet C. Oz ) and learned a lot about eating right and not living on a diet forever.