Shampoo good for hair loss

My hair tends to tangle and fall out a lot when it gets long, so I used to always keep it short. But recently, I let it grow out a bit, and the hair loss has gotten worse again. I still have a lot of hair (so far), but since I'm concerned about hair loss, I decided to try a hair loss shampoo. It doesn't feel like a herbal shampoo, so the scent is nice, and I have a feeling that it might be reducing the amount of hair falling out.