naturage 1 exothermic spa conditioning perm features Phytosterol Action Technology to reduce chemical levels by up to 30% for improved curls. Sanguinaria, a natural deodorizer in the neutralizer, ensures permed hair will have a fresh, clean fragrance and the improved conditioning Thermalizer will provide softer, more manageable, shinier hair. The neutralizer contains natural botaniceuticals to nourish, revitalize and protect hair.