It did take about 4 months for my hair to come back. The worst skin effect I had was when I went out to my garden one day for a couple of hours. I felt good that day and wanted to do something. It was cloudy, but I still got an awful sun burn. The skin on my neck dried, cracked scabbed and everything else you can imagine. For the rest of my treatment I wore a hood I made out of an old t-shirt covering everything but my eyes whenever I went out.