MCoBeauty XTENDLASH GROWTH SERUM MASCARA is the ultimate multi-tasking mascara that promotes the growth and length of your natural lashes, with growth-stimulating Acetyl Tetrapeptide-3. Density is also visibly improved while Betaine and Resurrection Plant Extract (Myrothamnus Flabellifolia Leaf/Stem Extract) work to nourish and sustain lash health. The easy-to-use, tapered brush ensures the serum mascara coats each individual lash with the perfect amount of product.