Bumble and Bumble Bond-Building Repair Oil Serum Size 48ml | Bumble And Bumble's bb. Bond-building repair oil serum boasts a powerful formula, enriched with the highest concentration of the brand's strengthening honey bond-building complex. Reveal resilient, beautifully restored tresses with this luxurious leave in treatment, with a transformative oil-serum formula that delivers a potent blend of damage-reversing ingredients to leave your hair stronger, shinier and silky smooth. 48ml Strengthening hair serum Suitable for all hair types Leaves hair strengthened, softened, repaired, protected, restored and softened Prevents breakage, heat damage, frizz and tangles Leave in treatment Formulated with Honey, Yeast Extract, Apple Seed Oil and Soybean Extract Free from Parabens Cruelty free HOW TO USEWork into damp hair and air-dry or heat-style, or smooth through dry hair to finish