The perfect balance between hair care and hair styling, this serum combines two winning technologies to heal very damaged hair. The dual-chambered leave-in formula combines restoring elixirs with thermo-responsive SRS technology. CSP 50 is a hair oil that combines two different types of oils to give hair the ultimate care, while leaving it light and smooth without any greasy residue. SRS technology is a thermo-responsive innovation that can be re-activated by low-temperature heat, allowing for optimum heat styling. This hair serum prevents split ends by repairing and coating the cuticle and damaged ends, helping prevent future breakage and resulting in long-lasting manageability, softness and strength.