3.3oz bottle. Used 1/3 of the bottle! Purchased at Blue Mercury. OLAPLEX No.6 Bond Smoother is a velvety, leave-in styling treatment that reduces frizz and flyaways for up to 72 hours, smooths blow-dries, and perfectly defines air-dries - all without hold or heaviness. Made for all hair types and textures, including colored, chemically-treated, and gray hair.