The book offers a comprehensive and in-depth exploration of Solid Lipid Nanoparticles (SLNs), one of the most promising and versatile drug delivery systems in modern pharmaceutical science. Designed for students, researchers, and professionals working in nanotechnology, pharmaceutics, biomedical engineering, and related fields.This book serves as a critical resource for understanding the core principles, formulation strategies, and real-world applications of solid lipid nanoparticles.