Our exclusive Extreme Lash And Brow Hair Growth Serum stimulates hair follicles deep within the pore to promote lash and brow growth. For even the sparsest lashes or brows , you will see visible signs of growth within three to four weeks. This special formula is clinically advanced and has the highest, safest ingredients to help stimulate hair growth. Use consistently every night for the first month. Then once a week to maintain fullness.