I have had thin hair before, after I used a hair straightner about 12 years ago, it hurt my scalp,it started growing thicker about three years ago, my child had lice, passed it to me, we used para which is loaded with chemicals,I think it damaged my scalp, soon after that my hair went dry, dry for about a week and now it falls out, I have about half the hair I use to have, any solutions for this problem? I use hair grow tonic, pills, shampoo, I take protein shake, calcium and vitamin tabs, I gym 5 days a week.I am going to try silica tablets today. What can I use to heal my scalp, and stop losing hair.