Olaplex N°.7 Bonding Oil is the first-of-its-kind. Highly concentrated, ultra-lightweight, reparative styling oil dramatically increases shine, adds softness and strength, and enhances all hair types and textures. When used with any thermal styling appliance N°.7 provides heat protection up to 230°C. Benefits: Repairs damaged and compromised hair Strengthens and protects hair structure Restores healthy appearance and texture Improved luster, shine, and manageability Directions: Remove cap. Turn the bottle upside down and gently tap the index finger on the bottom of the bottle to dispense a metered drop. Apply a small amount to damp or dry hair, style as desired.