While the process for making a shampoo bar is the same as making soap and the ingredients are similar, a well-formulated shampoo bar is not your typical soap bar. Shampoo bar "recipes" are tweaked to use different proportions of oils and butters and to include botanicals, like nettles right, herb infused oils and essential oils that are known to help nourish the hair and scalp.
Syndet is a blended word made by combining the words “synthetic” and “detergent.” There is a lot of hype about using syndet bars to go "soap-free." The theory is that since they are less alkaline than natural soap they will not harm the acid mantle.
Although you may see many different "organic" logos, symbols and badges on products, signs, and website, there are only two that have any real meaning. They are the circular "USDA Organic" logo and the logo from a USDA accredited certifying agency.