Sustenance® Fortifying Treatment (Step 3) is an advanced, high performance conditioner that contains Fiber Strengthening Complex (FSC), a revolutionary conditioning complex exclusive to Avlon that penetrates deep within the hair shaft while cuticles are open immediately after rinsing of the relaxer. Lipid Replenishing Molecules (LRMs), enter the hair fiber to replace natural shine properties depleted by chemical processing. Special polymers realign, seal and smooth hair cuticles as it normalizes hair. Micro-Molecular proteins and humectants penetrate deep within the hair shaft to help repair fiber damage while moisturizing and fortifying hair fiber. It works to repair and strengthen damaged hair fibers. Sustenance Fortifying Treatment is recommended for use as an Intensive Conditioning Treatment.