Full of Polypeptides, Amino Acids and other good-for-you ingredients, our scientifically advanced Hexatein® complexes ensure real results. Each RapidLash® product contains a different Hexatein® complex, tailored to the product’s purpose. From Panthenol and Pumpkin Seed Extract in RapidLash® Eyelash Enhancing Serum to Biotin and Apple Fruit Cell Extract in RapidBrow® Eyebrow Enhancing Serum, our products are bursting with goodness.