COSRX Ultra Perfect Hair Bonding Serum is a high-performance hair serum that forms a protective barrier by coating damaged hair with nutrient-rich botanical oils.

Its lightweight formula absorbs quickly without leaving a greasy residue, providing instant softness and shine.

Enriched with the patented peptide PEPTIDE-132™, it fills in thinning areas and locks in moisture and nutrients. Ideal for thick, dull hair that needs a soft, healthy-looking shine from root to tip.

Lightweight bonding oil serum with patented PEPTIDE-132™ that seals in nutrients, shields hair from damage, and delivers lasting softness and shine without residue.