New in box. BABE BROW Amplifying Serum. This ultra-powerful serum is a powerhouse of nourishing ingredients that deliver visible results and healthier-looking brows in just a few weeks - say bye to over-plucked, stressed out, and sparse brows. The doe-foot applicator helps cover the entire brow area, delivering a jolt of performance-based ingredients like castor oil, biotin, and chamomile to nourish your way to thicker and fuller-looking brows.