SLSA

SLSA or sodium lauryl sulfoacetate is a surfactant that helps create bubbles and lather in products.  SLSA is naturally derived from coconut and palm oils.  It is sulfate free, making it a very common ingredient in sulfate free shampoos.  The SLSA molecule is too large to penetrate the skin, creating less irritation than sulfates like SLS (Sodium Lauryl Sulfate).