Shampoo, believe it or not, is often a cause of hair loss. The product you are using to clean your hair and make it look better could actually be what causes your hair to fall out and other health problems. For example, Sodium Lauryl Sulfate (SLS), hidden by many synonym names, is one of the most common ingredients in modern shampoos. It creates a rich lather when it reacts to water and the oils in your hair, which makes it appear as a good cleansing agent, but it can cause problems. The National Toxic Encephalopathy Foundation says that SLS can deposit in your hair follicles and can slow your hair’s growth and cause your hair to thin. It can also cause new hair to take 8 times longer to grow than normal. It can also dry your hair, making it more brittle, which leads to more breakage.