Out of this world lashes & brows? Yes, please. Milani Highly Rated Lash + Brow Serum is a nightly serum designed to lengthen and volumize hair for healthier-looking lashes and brows.  In a clinical study, 100% of participants showed measurable improvement in lash & brow length & volume after just 4 week of daily use.  The tapered, precision brush allows for targeted lash and brow application.  For optimal results use for a minimum of 8 weeks and continue daily use to sustain.