I used to take a supplement from Holland and Barrett, I think it was called Silicia , made my nails stronger too..It contains horse hair! Anyway it worked for me.....Don't be tempted to try Re Gain.....It is very expensive. Wouldn't recommend anything expensive that claims to give you a good head of hair, as a hairdresser, I can tell you it does work to some extent, but once you stop using it, your hair will go back to being thin again. Massaging you scalp often will get the blood flowing and encourage the hair to grow, and a good multivitamin will help.......Products like Redkin thichening lotion and shampoo are very good too.......