Shampoos that have a lot of foam remove all oiliness from the hair. The sulfate free shampoohas a lot of foam that makes naturally oily hair free of the oil. The supplement components that replace the sulfur make the shampoo very foamy. This foam assimilates all the grease lodged between the hair follicles. This in turns gives it a better appearance. Hair that does not have grease always looks shiny. This makes it very ideal for hair treatment because the hair will not only look healthy but will be healthy as well. It will not remove a bad odor because if the greasiness.