All good advice here. See your Dr. & have test to make sure it is not a health issue. I lost a lot of hair at 55 yrs old for no apparent reason. Test all came back fine. My Dr told me to use Nioxin Shampoo & Cond. I bought it at the Salon inside of WalMart. I also started taking Biotin 5000 mg a day. Buy it over the counter @ WalMart in the Vitamin section. I take 2 day. I also started taking a Vit. bought from WalMart & on the label it just says Skin, Hair & Nails. I think the Biotin worked the best. My hair all came back in as thick as usual. Came in curly though. It is so thick & healthy for once in my life. After a yr of using Nioxin Shampoo, I stopped using it & notice no diff. My hair is suddenly growing very fast. Might try the Biotin if you know you are healthy.