NWT! Sold as a set of 4 bottles, .25 oz each; 1 oz total. OLAPLEX Nº.7 Bonding Oil™ boosts shine, softness, and color vibrancy. It repairs, strengthens hair, and reduces breakage and restores healthier-looking hair. OLAPLEX Nº.7 Bonding Oil™ delivers heat protection up to 450°F/232°C. 125% more shine Reduces breakage by 77% Controls frizz for up to 72 hours Tames flyways, and adds silky softness while protecting hair from heat up to 450°F/232°C.