<Li> Sodium laureth sulfate is derived from coconut oils and is used to soften water and create a lather . There was some concern over this particular ingredient circa 1998 as evidence suggested it might be a carcinogen, and this has yet to be disproved, as many sources still describe it as irritating to the hair and scalp . </Li> <Li> Sodium lauryl sulfate </Li> <Li> Sodium lauroamphoacetate is naturally derived from coconut oils and is used as a cleanser and counter-irritant . This is the ingredient that makes the product tear - free . </Li> <Li> Polysorbate 20 (abbreviated as PEG (20)) is a mild glycol - based surfactant that is used to solubilize fragrance oils and essential oils; meaning it causes liquid to spread across and penetrate the surface of a solid (i.e. your hair). </Li>

What did they use for shampoo in the old days