The Olaplex No. 7 Bonding Oil ($30) is my new favorite ... It can be applied to damp or dry hair before styling with heat and can be used daily after styling for extra shine.

The Olaplex No.7 Bonding Oil is an essential ... down to £21 from £28. I use the oil every time I wash my hair, applying it to the lengths before blow-drying, also paying special attention ...