Have you spent hundreds of dollars on shampoos that promise thicker, fuller hair? You're not alone. Many people hope that buying a more expensive shampoo will stop hair loss and bring their hair back. The truth is that most shampoos—even expensive ones—cannot cure hair loss. While they can help keep your hair and scalp healthy, they usually cannot treat the real cause of thinning hair. Let's take a closer look at why. What Does Shampoo Actually Do? Shampoo is designed to clea