Thicker, healthier, smoother brows with the only brow serum to use a strengthening, clinically proven protein. A drug-free, brow-boosting serum that prevents brow thinning and uneven growth, fills in uneven patches, strengthens, smoothes, and enhances elasticity. Virtue®'s patented and proprietary Alpha Keratin 60ku CLINICAL® works with a carefully crafted complex of proven-to-work ingredients that condition brows and support density and follicle stimulation to address brow thinning and sparseness. | VIRTUE Flourish Brow Density Booster, 0. 14 fl. oz | Dermstore