NULASTIN Brow serum helps unlock naturally full, shapely brows. Powered by Elastaplex Technology, this shape-altering serum bolsters elastin for visibly thicker and denser brows in as little as six weeks. Clinically tested, the formula supports the natural growth cycle to reduce shedding and promote fuller-looking brows where applied. It is expertly formulated with peptides and proteins to help anchor brow follicles at the root.