COSRX’s PEPTIDE-132 Ultra Perfect Hair Bonding Oil Serum is a lightweight finishing serum designed to smooth, protect and restore shine to damaged or dull-looking hair. It coats strands in a thin, nourishing layer that helps tame frizz and enhance gloss without weighing hair down.

Powered by patented PEPTIDE-132, the formula helps recharge hair protein and support keratin bonding for a stronger, more refined texture over time. It’s enriched with Vitamin E and seven plant-based oils to deeply nourish and hydrate, improving softness and manageability while boosting natural shine.

Despite its rich care benefits, the oil has a lightweight texture that absorbs quickly into the hair cuticle, leaving no greasy residue. Use it on damp hair before styling or on dry hair as a finishing touch to add smoothness and a healthy sheen. It leaves behind a refreshing citrus-woody scent with hints of bamboo and green notes for a clean, revitalized feel.