PKC Ultimate Protein straightening set, includes: Step1: Protein Keratin With Collagen Shampoo 140 ml Step2: Protein Keratin With Collagen Thermal Sealant blow dry 140 ml Step3: Protein Keratin With Collagen True Brazilian Keratin 140 ml The PKC Ultimate micro-particles penetrate the hair fibers' cortex, acting as a complex replenisher, providing hair with strength, softness, and radiance. Within minutes PKC is naturally absorbed by the hair fiber. After sealing the fibers with iron particles, the PKC particles fuse with the cortex proteins, shielding the strands and fully closing the cuticles. Through this process, PKC provides hair with extraordinary and natural smoothness. Benefits: Perfect straightening of hair strands Extreme volume reduction Natural smoothness Anti-frizz.