Kerafactor Lash + Brow Duo Serums visibly enhance lash and brow appearance. This duo, containing the patented KeraFactor Peptide Complex, KFP, utilizes biomimetic growth factors and peptides. The formulations support fuller, thicker, and more defined-looking lashes and brows. These serums achieve results without hormones, drugs, or prostaglandin analogs (PGAs), with visible improvements reported in 8–12 weeks.