I would like to share what I call my good luck supplement, Biotin. It has been a great help to me in regaining thicker tresses. I did not see results until about a month after taking them everyday religiously but it definitely works for your hair, skin and nails. I take one pill a day and the pill is 10,000 mcg. Remember to drink a lot of water while taking Biotin. Some people have complained of getting acne from Biotin but I've not had that happen.  Please do your own research when thinking about trying a supplement. What works for me may not  work for you.  Check out the link below from WebMD.
http://www.webmd.com/vitamins-and-supplements/lifestyle-guide-11/supplement-guide-biotin