Olaplex BrowBond Building Serum - 3.5ml Want the look of dense, defined, age-defying brows? BROWBOND® Building Serum is an innovative 3-in-1 eyebrow treatment that promotes the look of fuller, denser, more defined eyebrows in as little as 4 weeks.¹ This clear grooming gel-serum and microbristle doe-foot applicator also precisely sculpts brows without stiffness. Formulated with an innovative peptide to help reduce the appearance of new greys.² Ophthalmologist and dermatologist tested. Prostaglandin free. Leaves brows looking fuller, denser, and more defined in as little as 4 weeks.¹ Promotes softer, more youthful-looking brows. Formulated with an innovative peptide designed to help reduce the appearance of new grays.² Immediately shapes and sculpts with all-day hold. No stiff, sticky, or flaky brows. Use Dip the wand once and comb through hair along both browlines. Do not wash off. Allow to dry for 90 seconds before applying other skincare or makeup products. For optimal results, use AM and PM on clean, dry skin. When to use Use twice daily, AM and PM. For a complete routine, pair with LASHBOND® Building Serum. TIP: Consistency is key. For best results, use morning and night on clean, dry skin for at least 12 weeks and continue use for ongoing results.