Information about its carcinogenicity was not available. The addition of antioxidants will help protect against nitrosamine contamination. Most shampoos contain Sodium lauryl sulfate. Choosing a soap over a detergent for shampoo is an important decision. Soap and detergent shampoos are not the same thing, and there are advantages and disadvantages to both for your hair.
Soap is the purest choice next to using soapy herbs such as soap bark.
Whatever the disadvantages of detergent shampoos, they leave the hair shiny and far from dull. Health food stores increasingly carry brands of shampoos that use herbs and coconut oil soaps as a base. Kiss My Face, Aubrey Organics, Logona, and Real Purity, Inc. are some brands to look for. Each individual person, fabric, or material may react differently to a particular suggested use. It is recommended that before you begin to use any formula, you read the directions carefully and test it first.