Upgrade your hair care routine with COSRX PEPTIDE-132 Ultra Perfect Hair Bonding Oil Serum 28ml — a lightweight bonding oil serum designed to help leave hair softer, smoother, and shinier without a greasy feel. COSRX’s official product page describes it as a hair bonding oil serum with patented PEPTIDE-132™ that helps seal in nutrients, protect hair from damage, and deliver lasting softness and shine.