GRO Brow Serum (formerly vegaBROW) is a fan favorite! Fast, safe and effective, GRO Brow Serum is the key to thicker, fuller eyebrows. And who doesn't covet bolder brows? Our natural, vegan formula contains an exclusive Polyphytobase Complex with active phytomolecules, zinc and biotin, essential for healthy hair follicles. Get ready for brows that wow!