Olaplex No. 7 Bonding Oil 30ml is a highly concentrated, lightweight oil designed to nourish, protect and strengthen all hair types. It is an easy to use oil and can be applied onto wet or dry hair. Put a small amount on your palms and distribute evenly throughout your hair, focusing on the ends. With regular use Olaplex No. 7 Bonding Oil can help improve the overall health of your hair. Looking and feeling stronger and softer.