One great product that I love is the Nourishing Vegetarian Miracle by Davines. This Vegetarian Miracle will start to change the structure of your hair after the first use and you will defiantly notice a change. It is very important to follow any directions on the label because it is possible to get to much protein.
Some people come to me and tell me that they have been sleeping with a protein conditioner in there hair at night. AAAHHHH, I cringe!!! This is the worst thing you can do because there is a fine line of not enough protein and too much protein in your hair. When the hair gets to much protein the the hair becomes too strong and will actually snap or break. Most directions will say to leave the product on for 5-20 minutes. If you follow the directions then you will see amazing shiny healthy hair in 4-6 weeks.