What is the use of herbal extracts in hair shampoo?

To make you smell good. == All the additives such as "fruit oil" and "ylang-ylang" do nothing for the hair. The additives are simply there (1)to make the shampoo company money, (2)to give you variety in the smells of shampoo, and (3) to make the shampoo company money. The shampoos at the salon are much thinner than the commercial shampoos. They are designed to clean the hair so they don't need to be thick. You can thin your shampoo to half strength and still clean your hair effectively. Because it is thin, it doesn't need as much rinsing and will leave no residue in your hair. The lather DOES NOT clean the hair, it merely makes large amounts of foam.