 Pickering emulsions are a type of emulsion that is stabilized by solid particles located at the oil-water interface. They were discovered over a century ago and have been extensively studied in recent decades. Unlike traditional surfactants, solid particles can make pickering emulsions more stable against coalescence and provide useful properties. Additionally, they are more biocompatible when the solid particles used are safe for in vivo use. Pickering emulsions have a wide range of applications in fields such as biomedicine, food, fine chemical synthesis, cosmetics, and more. The morphology and properties of solid particles can be tuned to create different types of products from pickering emulsions. Overall, pickering emulsions are a versatile tool with many potential applications.