The ultimate hair serum? Yes, you're looking at it now - Olaplex No.9 This multifunctional serum is rich in antioxidants that strengthen your hair from the inside out and protect against free radicals, wear and tear and pollution for up to 48 hours. Olaplex No. 9 is enriched with effective ingredients that care and repair the hair and give you immediate results. The serum removes frizz and improves the results of your hair routine, while protecting and strengthening your hair, increasing hair health. With this Olaplex hair serum, you will experience how your hair becomes silky, shiny, soft and much more manageable. Application : * Apply some of the product to towel-dried hair. * Work the product from the hair roots towards the top. * Dry your hair for smoother hair, air dry your hair for more texture or use a diffuser nozzle to highlight your curls. Benefits: * Multifunctional hair serum * Enriched with antioxidants * Strengthens the hair from the inside out