lilyeve Grow Turn Exosome Dual Lash Serum is a 2-in-1 day-and-night lash care system featuring a tinted black serum for daytime definition and a clear nourishing serum for overnight care, powered by 5.1 million 4th-generation Nano-Exosomes, Biotin, and Copper Tripeptide-1 to support lash density, elasticity, and length while remaining prostaglandin-free and gentle on the sensitive eye area.