 Lipid nanoparticles, LNPs, specifically solid lipid nanoparticles, SLNs, and nanostructured lipid carriers, NLCs have gained significant attention due to their advantages such as good release profile, targeted drug delivery, and excellent physical stability. NLCs are modified SLNs that improve stability and capacity loading. Three structural models of NLCs exist and LNPs have potential applications in various fields including drug delivery, research, cosmetics, and clinical medicine. This article discusses the features, structure, innovation, preparation methods, advantages, disadvantages, and applications of LNPs with a focus on SLNs and NLCs. This article was authored by Nata Nasri, Hadi Valizata, and Parvind Zakiri Malani.