Kosas GrowPotion unlocks the secret to feathery brows and longer lashes. This 2-in-1 serum, powered by peptides and vegan keratin, visibly accelerates the appearance of fuller brows and thicker lashes. The unique formula nourishes delicate hairs from root to tip with continued use. Shine-inducing pro-vitamin B5 and conditioning hyaluronic acid help boost volume.