American Silky Straight System Shea Butter No Base Relaxer Regular 590ml Is a sodium hydroxide formula designed to condition the hair while straightening. The nourishing properties of Shea Butter protect the scalp and reduce hair breakage, adding smothness and shine. Uniquely blended with other natural anti-oxidants and emollients to preserve natural strength and to retain elasticity for more manageable and emollients to preserve natural strength and to retain elasticity for more manageable, healthy hair.